MEDIUMCVSS v3.1 5.5Vulnerability
CVE-2026-126831
A flaw was found in cpio. A local user can cause a Denial of Service (DoS) by triggering a stack-based buffer overflow when creating archives in tar or ustar formats. When archiving files owned by users or groups with names exceeding 32 characters, cpio copies these names into fixed-size memory without verifying their length. This unbounded copy corrupts stack memory and causes the application to crash.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00105
- Cvss severity
- MEDIUM
- Cvss score
- 5.5
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 5.5
- Cvss version
- 3.1
- Cve id
- CVE-2026-126831
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-11-12T19:59:23+00:00
- Name
- CVE-2026-126831
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Published at
- 2026-11-12T18:17:28.583
- Last modified
- 2026-11-13T16:18:46.613
- Epss percentile
- 0.0109
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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