CVE-2016-9637

lowpriority · track · 30EPSS 0.004 · 30 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.36% (30th) EPSS

CVSS 3.7 · low

Is it mine?

34 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

The (1) ioport_read and (2) ioport_write functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access.

remediations

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

A vendor fix is available.

Fixedxen-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux Desktop (v. 5 client)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop (v. 5 client)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Desktop (v. 5 client)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-debuginfo-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-devel-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-devel-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-devel-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-devel-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)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-2016:2963
Fixedxen-devel-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)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-2016:2963
Fixedxen-libs-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-libs-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop (v. 5 client)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-2016:2963
Fixedxen-libs-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-libs-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux (v. 5 server)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-2016:2963
Fixedxen-libs-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Desktop (v. 5 client)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-2016:2963

cvss

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

7.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.7–7.6

v2.03.7lowAV:L/AC:H/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 1.9 · impact 6.4

v3.07.5highCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.8 · impact 6

v2.06.5mediumAV:A/AC:H/Au:S/C:C/I:C/A:Csecondary · Red Hat Product Security US

v3.06.9mediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.07.6highCVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-264USprimaryCWE-125US

affected products (34)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
citrix xenserver= 6.0.2nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 6.2.0nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 6.5nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 7.0nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
xen-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux (v. 5 server)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux Desktop (v. 5 client)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.src as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)all versionsfixedredhat_csafUS
xen-0:3.0.3-148.el5_11.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)all versionsfixedredhat_csafUS
xen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux (v. 5 server)all versionsfixedredhat_csafUS
xen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop (v. 5 client)all versionsfixedredhat_csafUS
xen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Desktop Multi OS (v. 5 client)all versionsfixedredhat_csafUS
xen-debuginfo-0:3.0.3-148.el5_11.i386 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)all versionsfixedredhat_csafUS
xen-debuginfo-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux (v. 5 server)all versionsfixedredhat_csafUS
xen-debuginfo-0:3.0.3-148.el5_11.ia64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)all versionsfixedredhat_csafUS

showing 20 of 34

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2016:2963Red Hat Security Advisory: xen security update2016-12-20csaf · redhat_csafUS
An update for xen is now available for Red Hat Enterprise Linux 5. 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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

published 2017-02-17modified 2026-06-17

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references (18)

External citations — patches, advisories, analysis.

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