Review reviewHigh

CVE-2026-3084

GStreamer GStreamer, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6

GStreamer H.266 Codec Parser Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of picture partitions. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code i...

CVSS: 7.8
EPSS: 0.42%
CISA KEV: Not listed
Published: 2026.03.16

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.42%

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: GStreamer GStreamer, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6
Affected versions: >= 1c6e163aa33962f5ee4a87d29319ccdd5cb67612, < 1.28.1
Fixed versions: 1.28.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that GStreamer GStreamer, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-191