CVE-2021-33582

mediumpriority · track · 31OT risk · elevatedEPSS 0.031 · 88 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.09% (88th) EPSS

CVSS 5 · medium

Is it mine?

127 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled during hash-table interaction. Because there are many insertions into a single bucket, strcmp becomes slow. This is fixed in 3.4.2, 3.2.8, and 3.0.16.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedcyrus-imapd-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-0:3.0.7-20.el8_4.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-0:3.0.7-20.el8_4.1.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debuginfo-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debuginfo-0:3.0.7-20.el8_4.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debuginfo-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debuginfo-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debuginfo-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debugsource-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debugsource-0:3.0.7-20.el8_4.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debugsource-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debugsource-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-debugsource-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-20.el8_4.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-20.el8_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-20.el8_4.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-20.el8_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-20.el8_4.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-20.el8_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3492
Fixedcyrus-imapd-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-0:3.0.7-16.el8_2.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-0:3.0.7-16.el8_2.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_2.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_2.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_2.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_2.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3493
Fixedcyrus-imapd-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-0:3.0.7-16.el8_1.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-0:3.0.7-16.el8_1.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_1.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debuginfo-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_1.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-debugsource-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_1.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-utils-debuginfo-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_1.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_1.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_1.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_1.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546
Fixedcyrus-imapd-vzic-debuginfo-0:3.0.7-16.el8_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:3546

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-407USprimaryCWE-327USCWE-400US

affected products (127)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Open Source cyrus imapd <3.0.16all versionscert_bundDE
Open Source cyrus imapd <3.2.8all versionscert_bundDE
Open Source cyrus imapd <3.4.2all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source cyrus imapd< 3.0.16cert_bundDE
Open Source cyrus imapd< 3.2.8cert_bundDE
Open Source cyrus imapd< 3.4.2cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Project Cyrus Cyrus IMAP≤ 3.0.16fstec_bduRU
Project Cyrus Cyrus IMAP3.2.0 → 3.2.8fstec_bduRU
Project Cyrus Cyrus IMAP3.4.0 → 3.4.2fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
cyrus imap< 3.0.16nvdUScpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*

showing 20 of 127

advisories (4)

Vendor and ecosystem advisories describing this.

RHSA-2021:3492Red Hat Security Advisory: cyrus-imapd security update2021-09-13csaf · redhat_csafUS
An update for cyrus-imapd is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
RHSA-2021:3493Red Hat Security Advisory: cyrus-imapd security update2021-09-13csaf · redhat_csafUS
An update for cyrus-imapd is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
RHSA-2021:3546Red Hat Security Advisory: cyrus-imapd security update2021-09-15csaf · redhat_csafUS
An update for cyrus-imapd is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
WID-SEC-W-2022-0389cyrus imapd: Schwachstelle ermöglicht Denial of ServiceDeutsch2021-08-31csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in cyrus imapd ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd redhat_csaf NVD CVE.org MITRE

published 2021-09-01modified 2026-06-17

related (274)

Related entries.

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+269 more

references (31)

External citations — patches, advisories, analysis.

scry

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