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Vulnerability record · CVE-2025-66866 · published 29 December 2025

CVE-2025-66866: Gnu binutils improper input validation vulnerability

Gnu · Binutils

An issue was discovered in function d_abi_tags in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.

7.5 CVSS 3.1 High EPSS 0.31% · top 78.5% CWE-20 · Improper input validation
7.5CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in function d_abi_tags in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/caozhzh/CRGF-Vul/blob/main/cxxfilt/crash6.md ExploitThird Party Advisory
https://github.com/caozhzh/CRGF-Vul/blob/main/cxxfilt/crash6.md ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-66866), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.