# CVE-2026-125712: Gst-plugins-base: gst-plugins-base: missing bounds checks in rtcp sdes packet parsing

Status: published. Published: 2026-11-10. Updated: 2026-11-10.

A flaw was found in GStreamer's gst-plugins-base RTCP SDES packet parser. A remote sender able to reach an active media session can supply a malformed SDES entry whose declared length exceeds the received packet. Missing bounds validation can cause the receiver to read beyond the packet buffer, potentially crashing the application or exposing a limited amount of process memory.

## Remediation

- workaround: There is no complete mitigation while RTCP processing remains exposed. If RTP/RTCP is not needed, disable the affected RTP session handling elements. Otherwise, restrict the negotiated RTCP port to trusted peers with network controls. These measures reduce exposure but do not correct the parser flaw. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat Enterprise Linux 10 (gstreamer1-plugins-base): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (gstreamer-plugins-base): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gstreamer1-plugins-base): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gstreamer-plugins-base): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gstreamer1-plugins-base): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (gstreamer1-plugins-base): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: redhat

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-125

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2026-125712 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2569130 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gstreamer.freedesktop.org/security/sa-2026-0030.html (CNA: redhat)

- https://access.redhat.com/security/cve/CVE-2026-125712 (secalert@redhat.com)

- https://bugzilla.redhat.com/show_bug.cgi?id=2569130 (secalert@redhat.com)

- https://gstreamer.freedesktop.org/security/sa-2026-0030.html (secalert@redhat.com)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-125712; retrieved 2026-11-10; source updated 2026-11-10

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-125712; retrieved 2026-11-10; source updated 2026-11-10

Revision: be9d2a5412f847e166c43a3971fd266c275633ff44281a714a597f194409893b

Canonical: https://y2.dev/cve/CVE-2026-125712

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