High severity · published Sep 16, 2026
CVE-2026-92399
GPAC WebSocket rmt_ws.c rmt_client_handle_ws_frame heap-based overflow
7.3
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability was determined in GPAC 26.07.0. This affects the function rmt_client_handle_ws_frame of the file src/utils/rmt_ws.c of the component WebSocket Handler. Executing a manipulation of the argument payload_size can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.26 is able to mitigate this issue. This patch is called 37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12. Upgrading the affected component is recommended.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GP
GPAC · Gpac
26.07.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92399
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-92399
github.com
https://github.com/gpac/gpac/
github.com
https://github.com/gpac/gpac/commit/37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12
github.com
https://github.com/gpac/gpac/issues/3860
github.com
https://github.com/gpac/gpac/releases/tag/abi-16.26
github.com
https://github.com/user-attachments/files/31208030/poc_rmt_ws_malicious_frame.py
vuldb.com
https://vuldb.com/cve/CVE-2026-92399
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