CVE-2025-66866

HIGH
Published Dec 29, 2025 Modified Jan 14, 2026 CWE-20

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.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor Product
gnu binutils

References

Frequently Asked Questions

What is CVE-2025-66866? +
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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-66866? +
CVE-2025-66866 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2025-66866? +
CVE-2025-66866 affects products from gnu, specifically: binutils. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-66866? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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