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high · CVSS 7.5

CVE-2026-59692

Gstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback

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

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What happened?

A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker can send a certificate with an oversized Subject DN that exceeds the buffer, causing a stack buffer overflow and process crash, resulting in denial of service.

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
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
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.

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