# CVE-2025-66862: A buffer overflow vulnerability in function gnu_special in file cplus-dem.c in BinUtils 2.26 allows attackers to cause…

Source: https://junglewise.ai/threats/cve-2025-66862-a-buffer-overflow-vulnerability-in-function-gnu-special-in-file  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-29  
License: CC BY 4.0 with a link back

CVE-2025-66862 · Severity: high · CVSS 7.5 · Published 2025-12-29

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.

Technologies: [Gnu Binutils](https://junglewise.ai/threats/technologies/binutils). Vendors: [Gnu](https://junglewise.ai/threats/vendors/gnu).

## Quick answers

**Is CVE-2025-66862 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-66862 being exploited in the wild.

**How severe is CVE-2025-66862?** High severity, with a CVSS score of 7.5, published 29 December 2025.

**Which products and versions are affected?** Gnu Binutils. The advisory does not name versions.

**Is there a fix for CVE-2025-66862?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-66862?** Check whether you run Gnu Binutils. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Gnu Binutils

## Related threats

- [GNU Binutils null pointer dereference in dynamic relocation allocation](https://junglewise.ai/threats/cve-2026-91782-gnu-binutils-null-pointer-dereference-in-dynamic-relocation)
- [GNU Binutils null pointer dereference in ELF section handler](https://junglewise.ai/threats/cve-2026-91781-gnu-binutils-null-pointer-dereference-in-elf-section-handler)
- [GNU Binutils null pointer dereference in ELF linker](https://junglewise.ai/threats/cve-2026-91780-gnu-binutils-null-pointer-dereference-in-elf-linker)
- [GNU Binutils null pointer dereference in eh_frame section offset](https://junglewise.ai/threats/cve-2026-91779-gnu-binutils-null-pointer-dereference-in-eh-frame-section-offset)
- [GNU Binutils memory corruption in ELF string table handling](https://junglewise.ai/threats/cve-2026-90831-gnu-binutils-memory-corruption-in-elf-string-table-handling)