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CVE-2016-7948

31
FAUCET Score

CVE-2016-7948 describes an out-of-bounds write vulnerability in X.org libXrandr versions prior to 1.5.1, affecting Fedora and X.org libXrandr products. This critical vulnerability (CVSS 9.8) can be exploited remotely with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.0CPE matchmatch criteria
cpe:2.3:a:x.org:libxrandr:*:*:*:*:*:*:*:*
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
3.63%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0363 is in the 81st percentile among its peer group of 36,821 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: libXrandr
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXrandr
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libXrandr

Vendor Advisories (1)

redhatCVE-2016-7948Moderate

libXrandr: Insufficient validation of server responses result in various data mishandlings

Sep 25, 2016

References

cgit.freedesktop.org / xorg/lib/libXrandr/commit
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/74FFOHWYIKQZTJLRJWDMJ4W3WYBELUUG
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/Y7662OZWCSTLRPKS6R3E4Y4M26BSVAAM
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/93373
securitytracker.com / id/1036945