High severity · published Aug 20, 2026
CVE-2026-18299
GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
GStreamer rtpsbcdepay Use-After-Free 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 validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GS
GStreamer · GStreamer
99fde1184fe8b12d0721230941c1bf2080913183 · source: vendor, NVD
In the news
VulnerabilityHigh
ZDI-26-467: GStreamer rtpsbcdepay Use-After-Free 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-2026-18299.
Jul 29, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18299
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18299
Patch
https://gstreamer.freedesktop.org/security/sa-2026-0051.html
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-26-467/
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