Vulnerability

CVE-2026-2921

High· 7.8ZDICVSS7.8EPSS1%

.rules3/5

ZDI-26-168: 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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-2921.

Threat signal

78/100

High

Severity

high

CVSS

7.8

EPSS

Active

CVSS

v3.0via NVDOpen in FIRST calculator →

7.8/ 10HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorLocalRequires local access — shell, console, or local app.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionRequiredRequires user action (click, file open, etc).
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.84%

probability of exploitation in next 30 days

p53

higher than 53% of all CVEs

6-day trend↑ 0.8pp

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2026-2921. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCTrack

Total impact on non-trivial mission systems

exploitation: none
automatable: no
impact: total
mission: support

Lifecycle

2026-03-06Published
2026-03-06Last modified2 sources
2026-04-01Vendor advisory · amazon-linuxALAS2-2026-3210 — ALAS2-2026-3210 (important): gstreamer1-plugins-base
2026-06-02Vendor advisory · ubuntuUSN-8130-2 — GStreamer Base Plugins vulnerability
2026-06-10Vendor advisory · ubuntuUSN-8130-3 — GStreamer Base Plugins vulnerability

Entity graph

4 nodes · 3 edges · click to pivot

CVEActorVendor advisoryIOCNews

Vendor advisories

References

http://www.zerodayinitiative.com/advisories/ZDI-26-168/

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.