{"id":"CVE-2026-116540","aliases":[],"cve":{"records":[{"id":"CVE-2026-116540","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-26T14:30:57.662Z","published":"2026-10-26T14:59:40.154Z","modified":"2026-10-26T16:15:16.184Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-26T14:59:40.154Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-26T16:15:16.184Z"}],"references":[{"url":"https://github.com/netty/netty-tcnative/security/advisories/GHSA-mmc8-vg2v-fvvw","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://github.com/netty/netty-tcnative/commit/59662a8b07a9a7623ae1bc472f5751f31c81a118","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dynamic/src/main/c/sslcontext.c#L1365","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final","tags":["release-notes"],"source":"VulnCheck"},{"url":"https://github.com/netty/netty-tcnative","tags":["product"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/netty-tcnative-2.0.66-final-before-2.0.84-final-use-after-free-in-session-ticket-callback","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-416","description":"Use After Free","source":"VulnCheck"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-26T15:38:07.789293Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"netty-tcnative 2.0.66.Final before 2.0.84.Final Use-After-Free in Session Ticket Callback","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"netty-tcnative 2.0.66.Final before 2.0.84.Final built against OpenSSL 3.x contains a use-after-free vulnerability in ssl_tlsext_ticket_key_cb during session ticket key rotation. Remote clients performing TLS handshakes while setSessionTicketKeys0 frees the shared key array cause OpenSSL to read freed HMAC keys, crashing or corrupting ticket processing.","score":8.2,"severity":"high","published":"2026-10-26T14:59:40.154Z","modified":"2026-10-26T16:15:16.184Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"netty","name":"netty-tcnative","platforms":[],"versions":[{"version":"2.0.66.Final","status":"affected","lessThan":"2.0.84.Final","versionType":"custom"}],"defaultStatus":"unaffected","packageURL":"pkg:maven/io.netty/netty-tcnative","packageIdentity":{"ecosystem":"Maven","name":"io.netty:netty-tcnative"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116540"}],"remediation":[],"references":["https://github.com/netty/netty-tcnative/security/advisories/GHSA-mmc8-vg2v-fvvw","https://github.com/netty/netty-tcnative/commit/59662a8b07a9a7623ae1bc472f5751f31c81a118","https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dynamic/src/main/c/sslcontext.c#L1365","https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final","https://github.com/netty/netty-tcnative","https://www.vulncheck.com/advisories/netty-tcnative-2.0.66-final-before-2.0.84-final-use-after-free-in-session-ticket-callback"],"sources":[{"name":"CVE","id":"CVE-2026-116540","modified":"2026-10-26T16:15:16.184Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116540"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9}],"sourceAffected":[],"observedAt":"2026-10-29T14:35:11.380Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T15:50:31.248Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"netty-tcnative 2.0.66.Final before 2.0.84.Final has a use-after-free vulnerability in ssl_tlsext_ticket_key_cb. Remote clients may crash or corrupt ticket processing during TLS handshakes.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:44:05.737Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116540"}]}}