CVE-2025-71263

{"id": "CVE-2025-71263", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.4}]}, "published": "2026-03-13T19:53:53.983", "references": [{"url": "https://discuss.systems/@ricci/115747843169814700", "source": "cve@mitre.org"}, {"url": "https://sigma-star.at/blog/2025/12/unix-v4-buffer-overflow/", "source": "cve@mitre.org"}, {"url": "https://www.spinellis.gr/blog/20251223/", "source": "cve@mitre.org"}, {"url": "https://www.tuhs.org/pipermail/tuhs/2026-January/032991.html", "source": "cve@mitre.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "In UNIX Fourth Research Edition (v4), the su command is vulnerable to a buffer overflow due to the 'password' variable having a fixed size of 100 bytes. A local user can exploit this to gain root privileges. It is unlikely that UNIX v4 is running anywhere outside of a very small number of lab environments."}], "lastModified": "2026-03-16T14:54:11.293", "sourceIdentifier": "cve@mitre.org"}