{"id":"CVE-2026-111273","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-111273","generatedAt":"2026-10-28T01:03:24.006Z","title":"unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API.","description":"unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.","published":"2026-10-15T22:19:28.000Z","lastModified":"2026-10-16T20:17:20.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-193"],"affected":[],"epss":{"score":0.00209,"percentile":0.10978,"date":"2026-10-26","history":[{"date":"2026-10-16","score":0.00143,"percentile":0.03236}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-15T22:19:28.000Z","detail":{"score":"6.9","severity":"MEDIUM","publishedAt":"2026-10-15T22:19:28.333Z"},"summary":"New CVE, medium severity (CVSS 6.9)."}],"references":[{"url":"https://github.com/selmf/unarr","source":"disclosure@vulncheck.com"},{"url":"https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/tar/parse-tar.c#L242-L254","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind-pwn/unarr-tar-zip-oob","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/unarr-through-1.1.1-off-by-one-heap-buffer-overflow-via-tar-get-name","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind-pwn/cve-2026-111273-111274-unarr-tar-zip-oob","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-111273","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}