CVE-2016-9941

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.62%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2016-9941?
CVE-2016-9941 has been scored as a critical severity vulnerability.
How to fix CVE-2016-9941?
To fix CVE-2016-9941, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9941 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-9941 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.