{"id":"CVE-2026-79896","aliases":["EUVD-2026-90881","GHSA-h5vq-j79p-4xf3"],"status":"published","title":"Fortra BoKS Manager boks_portmux TLS ClientHello out-of-bounds read vulnerability","description":"Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00327,"percentile":0.26015,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-01T15:09:21Z","modified":"2026-10-01T20:34:26Z","products":[{"vendor":"fortra","product":"boks manager"}],"references":[{"url":"https://www.fortra.com/security/advisories/product-security/fi-2026-016"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79896"},{"url":"https://github.com/advisories/GHSA-h5vq-j79p-4xf3"}],"sources":{"cve":[{"id":"CVE-2026-79896","title":"Fortra BoKS Manager boks_portmux TLS ClientHello out-of-bounds read vulnerability","description":"Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.","status":"published","published":"2026-10-01T15:09:21.099Z","modified":"2026-10-01T16:02:49.186Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:50:38.739766Z"}],"euvd":[{"id":"EUVD-2026-90881","description":"Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.","status":"published","published":"2026-10-01T15:09:21Z","modified":"2026-10-01T16:02:49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:44.672309Z"}],"ghsa":[{"id":"GHSA-h5vq-j79p-4xf3","title":"Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello...","description":"Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.","status":"published","published":"2026-10-01T18:32:43Z","modified":"2026-10-01T18:32:49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:12:41.196374Z"}],"nvd":[{"id":"CVE-2026-79896","description":"Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.","status":"published","published":"2026-10-01T16:17:59.94Z","modified":"2026-10-01T20:34:26.287Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:53.41762Z"}]}}