CVE-2026-111183
CRITICAL 9.8GStreamer rtpL16depay Heap-based Buffer 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 processing of RTP payload elements. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31143.
Severe if exploited (CVSS 9.8), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.7%chance of exploitation in 30 days · 53rd percentile
Impact if exploited
9.8CVSS 3.0 · CRITICAL
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-122: : Heap-based Buffer Overflow
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References and research data (JSON)
All CVSS metrics
- CRITICAL 9.8 v3.0 · CNA Primary
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CRITICAL 9.8 v3.0 · NVD Secondary
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Exploit-tagged references (not proof of a PoC)
- https://www.zerodayinitiative.com/advisories/ZDI-26-775/ CVE record · zdi · Updated 2026-10-21T17:15:23.195Z
NVD · CVE-2026-111183 · Updated 2026-10-23T12:18:08.327
Advisories
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/80c184b4c5ee8ba28b2540ba58f40b8d44b61622 CVE record · zdi · Updated 2026-10-21T17:15:23.195Z
NVD · CVE-2026-111183 · Updated 2026-10-23T12:18:08.327 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-107395 EUVD · EUVD-2026-107395