CVE-2026-2921
HIGHGStreamer RIFF Palette Integer Overflow Remote Code Execution Vulnerability
Title source: cnaDescription
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.
References (22)
Core 22
Core References
X_Research Advisory x_research-advisory
ZDI-26-168
https://www.zerodayinitiative.com/advisories/ZDI-26-168/
Vendor Advisory vendor-advisory
vendor-provided URL
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/e3a99c35266fc92dd6a18ac5fde028d0cda559e6
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19024
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19180
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6259
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6300
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6750
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:7673
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:7850
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:8854
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:8857
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:8862
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:8874
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:8876
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:9446
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:9447
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:9487
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:9488
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-2921
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2447496
Scores
CVSS v3
7.8
EPSS
0.0087
EPSS Percentile
55.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-190
Status
published
Products (2)
gstreamer/gstreamer
< 1.28.1
GStreamer/GStreamer
1c6e163aa33962f5ee4a87d29319ccdd5cb67612
Published
Mar 16, 2026
Tracked Since
Mar 16, 2026