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CVE-2016-7950

31
FAUCET Score

CVE-2016-7950 describes an out-of-bounds write vulnerability in the X.org libXrender library (before version 0.9.10), specifically within the XRenderQueryFilters function, affecting Fedora and X.org products. This critical vulnerability (CVSS 9.8) can be exploited remotely without user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation is reported, its high severity and mention in media coverage indicate its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.9CPE matchmatch criteria
cpe:2.3:a:x.org:libxrender:*:*:*:*:*:*:*:*
24CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.72%
Probability of exploitation in next 30 days
EPSS Percentile
84.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0272 is in the 75th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libXrender
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXrender
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libXrender

Vendor Advisories (1)

redhatCVE-2016-7950Moderate

libXrender: Insufficient validation of server responses results out-of-bounds write in XRenderQueryFilters

Sep 25, 2016

References

cgit.freedesktop.org / xorg/lib/libXrender/commit
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7WCKZFMZ76APAVMIRCUKKHEB4GAS7ZUP
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ZHUT5YOSWVMBJNWZGUQNZRBFIZKRM4A6
lists.x.org / archives/xorg-announce/2016-October/002720.html
security.gentoo.org / glsa/201704-03
openwall.com / lists/oss-security/2016/10/04/2
openwall.com / lists/oss-security/2016/10/04/4
securityfocus.com / bid/93369
securitytracker.com / id/1036945