Out-of-bounds read in libwebsockets - CVE-2025-11679
Published: November 3, 2025
Vulnerability identifier: #VU117946
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-11679
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the lws_upng_emit_next_line() function in lib/misc/upng.c. A remote attacker can trigger an out-of-bounds read error and read contents of memory on the system.
Affected software
libwebsockets
How to mitigate CVE-2025-11679
Install updates from vendor's website.