{"id":"CVE-2026-103242","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103242","generatedAt":"2026-10-28T04:18:19.621Z","title":"A heap-based buffer overflow flaw was found in rpm.","description":"A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.","published":"2026-09-30T12:17:13.000Z","lastModified":"2026-09-30T17:16:43.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"},"cwe":["CWE-122"],"affected":[],"epss":{"score":0.00119,"percentile":0.01781,"date":"2026-10-27","history":[{"date":"2026-10-01","score":0.00172,"percentile":0.05931}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T12:17:13.000Z","detail":{"score":"7.1","severity":"HIGH","publishedAt":"2026-09-30T12:17:12.653Z"},"summary":"New CVE, high severity (CVSS 7.1)."}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-103242","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543866","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103242","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."}