Stack-based buffer overflow in libbiosig - CVE-2025-54492
Published: August 27, 2025
Vulnerability identifier: #VU114470
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-54492
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the MFER parsing functionality when the Tag is 67. A remote unauthenticated attacker can use a specially crafted MFER file, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
libbiosig
How to mitigate CVE-2025-54492
Install updates from vendor's website.
libbiosig - update to 3.9.1