CVE-2021-20325

highpriority · track · 40EPSS 0.016 · 76 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.59% (76th) EPSS

CVSS 10 · high

Is it mine?

43 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a security regression compared to the versions shipped in Red Hat Enterprise Linux 8.4. A user who installs or updates to Red Hat Enterprise Linux 8.5.0 would be vulnerable to the mentioned CVEs, even if they were properly fixed in Red Hat Enterprise Linux 8.4. CVE-2021-20325 was assigned to that Red Hat specific security regression and it does not affect the upstream versions of httpd.

cvss

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

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-918USprimaryCWE-119US

affected products (43)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Apache HTTP Server <2.4.49all versionscert_bundDE
Avaya Aura Application Enablement Servicesall versionscert_bundDEcpe:/a:avaya:aura_application_enablement_services:-
Avaya Aura Communication Managerall versionscert_bundDEcpe:/a:avaya:communication_manager:-
Avaya Aura Experience Portalall versionscert_bundDEcpe:/a:avaya:aura_experience_portal:-
Avaya Aura Session Managerall versionscert_bundDEcpe:/a:avaya:session_manager:-
Avaya Aura System Managerall versionscert_bundDEcpe:/a:avaya:aura_system_manager:-
Avaya Web License Managerall versionscert_bundDEcpe:/a:avaya:web_license_manager:-
Broadcom Brocade Switchall versionscert_bundDEcpe:/h:brocade:switch:-
Cisco Expresswayall versionscert_bundDEcpe:/a:cisco:expressway_software:-
Cisco FXOSall versionscert_bundDEcpe:/o:cisco:fxos:-
Cisco Firepowerall versionscert_bundDEcpe:/a:cisco:firepower:-
Cisco Prime Collaboration Provisioningall versionscert_bundDEcpe:/a:cisco:prime_collaboration:::provisioning
Cisco Prime Infrastructureall versionscert_bundDEcpe:/a:cisco:prime_infrastructure:-
Cisco Security Manager (CSM)all versionscert_bundDEcpe:/a:cisco:security_manager:-
Cisco TelePresenceall versionscert_bundDEcpe:/h:cisco:telepresence:video_communication_server
Cisco Unified Computing System (UCS)all versionscert_bundDEcpe:/h:cisco:unified_computing_system:-
Cisco Wide Area Application Servicesall versionscert_bundDEcpe:/a:cisco:wide_area_application_services:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
F5 BIG-IPall versionscert_bundDEcpe:/a:f5:big-ip:-

showing 20 of 43

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0438Apache HTTP Server: Mehrere SchwachstellenDeutsch2021-06-09csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache HTTP Server ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder sonstige Auswirkungen zu verursachen.
WID-SEC-W-2022-0724Apache HTTP Server: Mehrere SchwachstellenDeutsch2021-09-16csaf · cert_bundDE
Ein entfernter Angreifer kann mehrere Schwachstellen in Apache HTTP Server ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen und einen Denial of Service Zustand herzustellen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2022-02-18modified 2026-06-17

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references (10)

External citations — patches, advisories, analysis.

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