What is CVE-2025-66862?

CVE-2025-66862 is a high-severity vulnerability in Gnu Binutils, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-12-29.

How severe is CVE-2025-66862?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Gnu Binutils

CVE-2025-66862

A buffer overflow vulnerability in function gnu_special in file cplus-dem.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (24.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gnu Binutils — versions 2.26
N/a — versions n/a

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-66862?: CVE-2025-66862 is a high-severity vulnerability in Gnu Binutils, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-12-29.
How severe is CVE-2025-66862?: High severity. CVSS v3 base score is 7.5 out of 10.