{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"coturn/coturn","product":"coturn","source":"CNA: VulnCheck","vendor":"coturn","versions":[{"lessThan":"4.11.0","status":"affected","version":"4.10.0","versionType":"semver"}]}],"cveId":"CVE-2026-104074","cwes":["CWE-908"],"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.","epss":{"date":"2026-11-08","percentile":0.24128,"score":0.00311},"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","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","version":"4.0"},{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}],"modifiedAt":1794146445918,"publishedAt":1791383385615,"references":[{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/coturn/coturn/releases/tag/4.11.0"},{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/coturn/coturn/pull/1878"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/coturn/coturn/commit/741b2983cc52f967dd08c438fd72a5f08f13ca27"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/coturn/coturn/pull/1878"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/coturn/coturn/commit/741b2983cc52f967dd08c438fd72a5f08f13ca27"}],"revision":"e3e295516427b4b2f49f2d70183eca0e244b1e19aa6f8e92fdcd9e2e8a10d424","sources":[{"modifiedAt":1794146445918,"name":"CNA: VulnCheck","retrievedAt":1794147009684,"url":"https://www.cve.org/CVERecord?id=CVE-2026-104074"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794150617302,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104074"}],"ssvc":{"assessedAt":1791405898308,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Coturn 4.10.0 Uninitialized Stack Memory Disclosure via ERROR-CODE","updatedAt":1794150617302}