CVE-2026-66485
A remote, anonymous attacker can exploit multiple vulnerabilities in cpio to bypass security measures, cause a denial of service, or manipulate data.
CSIRTS triage
- What
- Multiple vulnerabilities in cpio allow attackers to bypass security measures, cause denial of service, or manipulate data.
- Who is affected
- All cpio deployments are affected; specific versions not stated.
- Urgency
- Low—severity rated low with no active exploitation reported.
- Action
- Apply available cpio security patches when released.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (3)
- low[NEW] [low] cpio: Multiple vulnerabilitiescert-bund · 2026-08-13
- unknownCVE-2026-66485: Uncontrolled Memory Allocation in GNU cpiomsrc · 2026-08-11
- unknownCVE-2026-66485: GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/m…nvd · 2026-08-10
External references
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[](https://www.csirts.com/cve/CVE-2026-66485)