What’s Vulnerable › Vulnerabilities

CVE-2016-9941

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-12-31 · updated 2026-06-17
• Weakness: CWE-119

Description

Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area.

Affected products

• LibVNCServer: through 0.9.10

References

• http://www.debian.org/security/2017/dsa-3753
• http://www.securityfocus.com/bid/95170
• https://github.com/LibVNC/libvncserver/pull/137
• https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
• https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
• https://security.gentoo.org/glsa/201702-24
• https://usn.ubuntu.com/4587-1/
• http://www.debian.org/security/2017/dsa-3753
• http://www.securityfocus.com/bid/95170
• https://github.com/LibVNC/libvncserver/pull/137
• https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
• https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

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