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Vulnerability record · CVE-2026-2921 · published 16 March 2026

CVE-2026-2921: Gstreamer integer overflow vulnerability

Gstreamer · Gstreamer

GStreamer RIFF Palette Integer Overflow 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 handling of palette data in AVI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28854.

7.8 CVSS 3.1 High EPSS 0.35% · top 73.6% CWE-190 · Integer overflow
7.8CVSS 3.1 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References
21 Jul 2026Last modified by NVD

Description

GStreamer RIFF Palette Integer Overflow 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 handling of palette data in AVI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28854.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/e3a99c35266fc92dd6a18ac5fde028d0cda559e6 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-26-168/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2026/03/msg00018.html
https://access.redhat.com/errata/RHSA-2026:19024
https://access.redhat.com/errata/RHSA-2026:19180
https://access.redhat.com/errata/RHSA-2026:6259
https://access.redhat.com/errata/RHSA-2026:6300
https://access.redhat.com/errata/RHSA-2026:6750
https://access.redhat.com/errata/RHSA-2026:7673
https://access.redhat.com/errata/RHSA-2026:7850
https://access.redhat.com/errata/RHSA-2026:8854
https://access.redhat.com/errata/RHSA-2026:8857
https://access.redhat.com/errata/RHSA-2026:8862
https://access.redhat.com/errata/RHSA-2026:8874
https://access.redhat.com/errata/RHSA-2026:8876
https://access.redhat.com/errata/RHSA-2026:9446
https://access.redhat.com/errata/RHSA-2026:9447
https://access.redhat.com/errata/RHSA-2026:9487
https://access.redhat.com/errata/RHSA-2026:9488
https://access.redhat.com/security/cve/CVE-2026-2921
https://bugzilla.redhat.com/show_bug.cgi?id=2447496
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2921.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-2921), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.