What’s Vulnerable › Vulnerabilities

CVE-2016-7951

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-12-13 · updated 2026-06-17
• Weakness: CWE-125

Description

Multiple integer overflows in X.org libXtst before 1.2.3 allow remote X servers to trigger out-of-bounds memory access operations by leveraging the lack of range checks.

Affected products

• Fedoraproject Fedora: 24, 25
• X Libxtst: through 1.2.2

References

• http://www.openwall.com/lists/oss-security/2016/10/04/2
• http://www.openwall.com/lists/oss-security/2016/10/04/4
• http://www.securityfocus.com/bid/93370
• http://www.securitytracker.com/id/1036945
• https://cgit.freedesktop.org/xorg/lib/libXtst/commit/?id=9556ad67af3129ec4a7a4f4b54a0d59701beeae3
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFLHX7WNEUXXDAGR324T35L5P6RRR7GE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVEUZRHYY3AJEKMFQ4DS7DX3Y2AICFP7/
• https://lists.x.org/archives/xorg-announce/2016-October/002720.html
• http://www.openwall.com/lists/oss-security/2016/10/04/2
• http://www.openwall.com/lists/oss-security/2016/10/04/4
• http://www.securityfocus.com/bid/93370
• http://www.securitytracker.com/id/1036945

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