Vulnerability · Published Dec 29, 2025 · Assigned by mitre
CVE-2025-66865
High 7.5
In plain English
A high-severity stack buffer overflow in the binutils package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 68.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue was discovered in function d_print_comp_inner in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | binutils | no fix listed | DEBIAN-CVE-2025-66865 |
| Debian:13 | binutils | no fix listed | DEBIAN-CVE-2025-66865 |
| Debian:14 | binutils | no fix listed | DEBIAN-CVE-2025-66865 |
| Ubuntu:22.04:LTS | binutils | no fix listed | UBUNTU-CVE-2025-66865 |
| Ubuntu:24.04:LTS | binutils | no fix listed | UBUNTU-CVE-2025-66865 |
| Ubuntu:25.10 | binutils | no fix listed | UBUNTU-CVE-2025-66865 |
| Ubuntu:26.04:LTS | binutils | no fix listed | UBUNTU-CVE-2025-66865 |
| Ubuntu:26.10 | binutils | no fix listed | UBUNTU-CVE-2025-66865 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H