{"id":"CVE-2026-104074","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104074","generatedAt":"2026-10-28T00:59:43.309Z","title":"Coturn 4.10.0 contains an uninitialized memory disclosure vulnerability that allows remote unauthenticated attackers to leak stack memory contents by sending a TURN Allocate request without credentials.","description":"Coturn 4.10.0 contains an uninitialized memory disclosure vulnerability that allows remote unauthenticated attackers to leak stack memory contents by sending a TURN Allocate request without credentials. Attackers can exploit the stun_init_error_response_common_str() function in src/client/ns_turn_msg.c, which fails to zero-initialize the avalue buffer before computing its length with strlen() and copying leaked stack bytes into the ERROR-CODE reason phrase, exposing pointer fragments that weaken ASLR and enable precise version fingerprinting.","published":"2026-10-07T15:17:03.000Z","lastModified":"2026-10-07T21:17:08.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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-908"],"affected":[],"epss":{"score":0.00311,"percentile":0.23746,"date":"2026-10-26","history":[{"date":"2026-10-08","score":0.00311,"percentile":0.21929}]},"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 (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-07T15:17:03.000Z","detail":{"score":"6.9","severity":"MEDIUM","publishedAt":"2026-10-07T15:17:02.760Z"},"summary":"New CVE, medium severity (CVSS 6.9)."}],"references":[{"url":"https://github.com/coturn/coturn/commit/741b2983cc52f967dd08c438fd72a5f08f13ca27","source":"disclosure@vulncheck.com"},{"url":"https://github.com/coturn/coturn/pull/1878","source":"disclosure@vulncheck.com"},{"url":"https://github.com/coturn/coturn/releases/tag/4.11.0","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104074","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."}