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VulnerabilityPublished

CVE-2026-125712: Red Hat Enterprise Linux 10 · Out-of-bounds Read

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 8.2 High.

Data as of 10 Nov 2026, 11:35 UTC

CVSS 3.1 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.18.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10gstreamer1-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 6gstreamer-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer1-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 8gstreamer1-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 9gstreamer1-plugins-baseAffected–Fixed in–

AI-suggested

No complete mitigation exists while RTCP processing remains exposed. If RTP/RTCP is not required, disable the affected RTP session handling elements to prevent exposure. Otherwise, restrict the negotiated RTCP port to trusted peers using network controls to reduce the attack surface. These mitigations reduce exposure but do not fix the underlying parser flaw. Upgrading to fixed versions (Fedora 44, Rawhide, RHEL 10.4, RHIVOS 2.1 and 2.1-core) is recommended when available.

Description

CVE-2026-125712 is a high-severity vulnerability in GStreamer's gst-plugins-base RTCP SDES packet parser affecting Red Hat Enterprise Linux 10 and other Red Hat products. A remote attacker can send malformed RTCP SDES packets with declared lengths exceeding the actual packet size, causing an out-of-bounds read. This flaw can lead to application crashes or limited exposure of process memory. Affected versions include Fedora 43, RHEL 7 ELS, supported RHEL 8 and 9 streams, and RHEL 10.0 through 10.3. Versions Fedora 44, Rawhide, RHEL 10.4, and RHIVOS 2.1 and 2.1-core contain the upstream fix and are not affected. No complete mitigation exists while RTCP processing is exposed, but disabling RTP/RTCP if unused or restricting RTCP ports to trusted peers can reduce risk.

References

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