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CVE-2016-7945

20
FAUCET Score

CVE-2016-7945 describes multiple integer overflow vulnerabilities in X.org's libXi library, affecting Fedora and X.org libXi versions prior to 1.7.7. A remote X server could exploit these flaws by manipulating length fields, leading to a denial of service through out-of-bounds memory access or an infinite loop. This vulnerability has a CVSS v3 score of 7.5 (High), indicating a network-based attack with low complexity and no user interaction required, resulting in high availability impact. While there are no known public exploits in Metasploit or ExploitDB, and it's not listed in CISA's KEV catalog, it has received some community discussion and media coverage, suggesting awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
24CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
<= 1.7.6CPE matchmatch criteria
cpe:2.3:a:x.org:libxi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.00%
Probability of exploitation in next 30 days
EPSS Percentile
85.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0300 is in the 75th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 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: libXi
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXi
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libXi

Vendor Advisories (1)

redhatCVE-2016-7945Moderate

libXi: Insufficient validation of server responses result in Integer overflows

Sep 25, 2016

References

cgit.freedesktop.org / xorg/lib/libXi/commit
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/C3NTWIWSQ575GREBVAOUQUIMDL5CDVGP
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KVTZ2XLPKLASQUIQA2GMKKAUOQIUMM7I
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/93364
securitytracker.com / id/1036945