Heap-based buffer overflow in Binutils - CVE-2025-66862
Published: February 3, 2026 / Updated: May 12, 2026
Vulnerability identifier: #VU122266
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-66862
CWE-ID: CWE-122
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 within the gnu_special() function in file cplus-dem.c. A remote attacker can pass specially crafted PE file to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Affected software
Binutils
F5OS
F5OS
How to mitigate CVE-2025-66862
Install update from vendor's website.
Binutils - update to 2.45.1