CVE-2025-66865: n/a
Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
AI-suggested
1. Immediately audit development and build environments to identify use of BinUtils version 2.26. 2. Avoid processing untrusted or unauthenticated PE files with the vulnerable BinUtils version. 3. Implement sandboxing or containerization for build processes to isolate potential crashes and limit impact. 4. Monitor official GNU BinUtils repositories and security advisories for patches addressing CVE-2025-66865 and apply updates promptly once available. 5. Where possible, upgrade to a newer, unaffected version of BinUtils after thorough testing. 6. Integrate input validation and filtering mechanisms to detect and block malformed PE files before they reach BinUtils tools. 7. Enhance logging and monitoring around build systems to detect abnormal crashes or service interruptions indicative of exploitation attempts. 8. Educate development teams about the vulnerability and enforce strict controls on the sources of PE files used in builds. 9. Consider implementing redundancy in build infrastructure to maintain availability during potential DoS incidents. 10. Coordinate with software supply chain partners to ensure they are aware of and mitigating this vulnerability.
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.