Vulnerability in Linuxfoundation Runc
CVE-2025-31133
runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the sour…
EPSS: 0.007 (47.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Linuxfoundation Runc — versions 1.4.0
- Opencontainers Runc — versions < 1.2.8, >= 1.3.0-rc.1, < 1.3.3, >= 1.4.0-rc.1, <= 1.4.0-rc.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Mitigation)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-31133?
- CVE-2025-31133 is a high-severity vulnerability in Linuxfoundation Runc, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 7.8/10. Published 2025-11-06.
- How severe is CVE-2025-31133?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-31133 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.