What is CVE-2026-119777?

CVE-2026-119777 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-10-30.

How severe is CVE-2026-119777?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Red Hat Enterprise Linux 10

CVE-2026-119777

A flaw was found in GStreamer's gst-plugins-bad H.266/VVC parser. When processing a malformed H.266 media file or stream, an integer overflow while parsing profile, tier, and level fields can lead to a stack-based buffer overflow. An attacker could cause an application to crash and may be able to execute code in the context of the affected application.

Vulnerability class: Buffer Overflow

Published 2026-10-30 · last modified 2026-10-30.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Red Hat Enterprise Linux 10

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

access.redhat.com/security/cve/CVE-2026-119777 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)
gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11241

Frequently asked questions

What is CVE-2026-119777?: CVE-2026-119777 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-10-30.
How severe is CVE-2026-119777?: High severity. CVSS v3 base score is 7.8 out of 10.