{"id":"CVE-2026-103547","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103547","generatedAt":"2026-10-28T00:57:07.477Z","title":"A remote attacker who can reach ldapd can complete a Bind as another identity.","description":"In ldapd in OpenBSD 7.8 before errata 057 and 7.9 before errata 021, delegated BSD authentication results are correlated only by the LDAP child process client file descriptor and LDAP message ID. After a connection closes, a later connection that reuses the same file descriptor and message ID can receive the earlier authentication result. A remote attacker who can reach ldapd can complete a Bind as another identity. A missing connection can also cause a NULL pointer dereference. (ldapd is not enabled by default.)","published":"2026-09-30T20:17:32.000Z","lastModified":"2026-10-01T15:07:28.000Z","status":"Deferred","sourceIdentifier":"cve@mitre.org","cvss":{"version":"4.0","score":9.2,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/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-863"],"affected":[],"epss":{"score":0.00372,"percentile":0.3093,"date":"2026-10-26","history":[{"date":"2026-10-01","score":0.00603,"percentile":0.46928}]},"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 (0.37%). 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":"2026-09-30T20:17:32.000Z","detail":{"score":"9.2","severity":"CRITICAL","publishedAt":"2026-09-30T20:17:31.607Z"},"summary":"New CVE, critical severity (CVSS 9.2)."}],"references":[{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/7.9/common/021_ldapd.patch.sig","source":"cve@mitre.org"},{"url":"https://github.com/openbsd/src/commit/4f3f58e83c2a6d239c544236a9d4d76c74bbf960","source":"cve@mitre.org"},{"url":"https://www.openbsd.org/errata78.html","source":"cve@mitre.org"},{"url":"https://www.openbsd.org/errata79.html","source":"cve@mitre.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103547","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."}