{"id":"CVE-2019-14431","aliases":["EUVD-2019-5630","GHSA-8cvm-x5pf-w457"],"status":"published","title":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages...","description":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256 bytes and possible Remote Code Execution in parseSSLHandshake in sslDecode.c. During processing of a crafted packet, the server mishandles the fragment length value provided in the DTLS message.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.03632,"percentile":0.89687,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-755","CWE-787"],"published":"2019-07-29T21:21:37Z","modified":"2026-06-17T02:18:25Z","products":[{"vendor":"matrixssl","product":"matrixssl"}],"references":[{"url":"https://github.com/matrixssl/matrixssl/issues/30","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-14431"},{"url":"https://github.com/advisories/GHSA-8cvm-x5pf-w457"}],"sources":{"cve":[{"id":"CVE-2019-14431","description":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256 bytes and possible Remote Code Execution in parseSSLHandshake in sslDecode.c. During processing of a crafted packet, the server mishandles the fragment length value provided in the DTLS message.","status":"published","published":"2019-07-29T21:21:37Z","modified":"2024-08-05T00:19:41.092Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:20:17.722148Z"}],"euvd":[{"id":"EUVD-2019-5630","description":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256 bytes and possible Remote Code Execution in parseSSLHandshake in sslDecode.c. During processing of a crafted packet, the server mishandles the fragment length value provided in the DTLS message.","status":"published","published":"2019-07-29T21:21:37Z","modified":"2024-08-05T00:19:41Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","level":"critical"}],"updated_at":"2026-11-03T02:40:39.508511Z"}],"ghsa":[{"id":"GHSA-8cvm-x5pf-w457","title":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages...","description":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256 bytes and possible Remote Code Execution in parseSSLHandshake in sslDecode.c. During processing of a crafted packet, the server mishandles the fragment length value provided in the DTLS message.","status":"published","published":"2022-05-24T16:51:46Z","modified":"2023-03-03T03:30:23Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:54:15.627441Z"}],"nvd":[{"id":"CVE-2019-14431","description":"In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256 bytes and possible Remote Code Execution in parseSSLHandshake in sslDecode.c. During processing of a crafted packet, the server mishandles the fragment length value provided in the DTLS message.","status":"published","published":"2019-07-29T22:15:12.177Z","modified":"2026-06-17T02:18:25.057Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-755","CWE-787"],"updated_at":"2026-11-02T14:05:21.892729Z"}]}}