{"id":"CVE-2026-116541","published":"2026-10-26T16:17:19.527","lastModified":"2026-10-26T20:17:55.630","description":"Netty netty-tcnative before 2.0.84.Final contains a denial of service vulnerability in the tcn_write_to_bytebuffer BIO write callback that overreports bytes consumed. Remote TLS 1.3 peers can provoke queued post-handshake records like NewSessionTicket or KeyUpdate to truncate flights, fail connections, or abort the JVM process.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-682"],"vendors":[],"products":[],"references":[{"url":"https://github.com/netty/netty-tcnative","tags":[]},{"url":"https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dynamic/src/main/c/ssl.c#L240","tags":[]},{"url":"https://github.com/netty/netty-tcnative/commit/e31df4a5885b35085fdfa3e2dca7c1f705d4745b","tags":[]},{"url":"https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final","tags":[]},{"url":"https://github.com/netty/netty-tcnative/security/advisories/GHSA-9xr3-jwv4-r489","tags":[]},{"url":"https://www.vulncheck.com/advisories/netty-tcnative-before-2.0.84-final-denial-of-service-via-bio-write-overcount","tags":[]}],"exploitRefs":[{"url":"https://github.com/netty/netty-tcnative","tags":[]},{"url":"https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dynamic/src/main/c/ssl.c#L240","tags":[]},{"url":"https://github.com/netty/netty-tcnative/commit/e31df4a5885b35085fdfa3e2dca7c1f705d4745b","tags":[]},{"url":"https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final","tags":[]},{"url":"https://github.com/netty/netty-tcnative/security/advisories/GHSA-9xr3-jwv4-r489","tags":[]}],"hasPoc":true,"ai":null}