Skip to content
statance
MenuClose
Log inStart for free ↗
high · CVSS 7.1

CVE-2026-59691

Gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb hextile heap out-of-bounds write with 16bpp framebuffer

Published 9 Jul 2026 · Source updated 4 Nov 2026 · Retrieved 2026-11-04 23:20 UTC

Monitor this CVE ↗Full CVE monitoring on Pro and Business

What happened?

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption.

Description supplied by CVE Program. Formatting is simplified; follow the original advisory for full details.

Affected software and versions

Source-provided software and version information
SoftwareVersion informationFixed version
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.26.7-2.el10_2.6 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.24.11-3.el10_0.6 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.10.4-7.el7_9 to < *See vendor advisory
gstreamer-plugins-bad-freeRed Hatunaffected: 0:0.10.23-26.el7_9 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-9.el8_10.1 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-4.el8_4.4 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-4.el8_4.4 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-4.el8_6.4 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-4.el8_6.4 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-4.el8_8.4 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.16.1-4.el8_8.4 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.22.12-7.el9_8.3 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.18.4-9.el9_2.5 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.22.1-6.el9_4.6 to < *See vendor advisory
gstreamer1-plugins-bad-freeRed Hatunaffected: 0:1.22.12-5.el9_6.6 to < *See vendor advisory
gstreamer-plugins-bad-freeRed HatDefault status: affectedSee vendor advisory

Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.

Is it being exploited?

This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.

CISA data retrieved 2026-11-06 16:38 UTC. Check CISA ↗

How to respond

  1. Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
  2. Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
  3. Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.

Sources and remediation references

This public advisory does not determine whether a particular server is affected. Records are refreshed as sources change; verify urgent decisions against the original advisory.

← Browse the public CVE feed