{"id":"CVE-2026-77709","aliases":["EUVD-2026-118431","GHSA-chg8-5pc7-9qfp"],"status":"published","title":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS...","description":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00659,"percentile":0.51809,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-11-06T19:06:33Z","modified":"2026-11-06T21:31:32Z","products":[{"vendor":"sonicwall","product":"sonicos"}],"references":[{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77709"},{"url":"https://github.com/advisories/GHSA-chg8-5pc7-9qfp"}],"sources":{"cve":[{"id":"CVE-2026-77709","description":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.","status":"published","published":"2026-11-06T19:06:33.104Z","modified":"2026-11-06T19:22:06.64Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-122"],"updated_at":"2026-11-06T20:30:05.028126Z"}],"euvd":[{"id":"EUVD-2026-118431","description":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.","status":"published","published":"2026-11-06T19:06:33Z","modified":"2026-11-06T19:22:06Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-07T00:07:45.032755Z"}],"ghsa":[{"id":"GHSA-chg8-5pc7-9qfp","title":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS...","description":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.","status":"published","published":"2026-11-06T21:31:28Z","modified":"2026-11-06T21:31:32Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-122"],"updated_at":"2026-11-06T21:34:16.869182Z"}],"nvd":[{"id":"CVE-2026-77709","description":"A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.","status":"published","published":"2026-11-06T19:17:57.447Z","modified":"2026-11-06T21:13:01.193Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-06T22:02:17.053381Z"}]}}