CVE-2014-6051 Integer overflow in n/a

What is CVE-2014-6051?

CVE-2014-6051 is a high-severity vulnerability in Debian Debian Linux, published on 30 Sep 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.

Weakness: CWE-189

Which versions are affected by CVE-2014-6051?

It affects 6 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Libvncserver Libvncserver, Oracle Solaris, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus.

How do I fix CVE-2014-6051?

Upgrade to a fixed version.

Is CVE-2014-6051 being exploited?

There is no known exploitation of CVE-2014-6051 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-6051, GHSA-6457-9pfw-39g2, UBUNTU-CVE-2014-6051.