{"id":"CVE-2026-77709","title":"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 applicati…","summary":"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 applicati…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"adp","cwe":["CWE-122"],"vendor":"SonicWall","product":"SonicOS","affected":["SonicOS 7.3.3-7015 and older versions","SonicOS 8.2.2-8015 and older versions"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T19:21:51.287676Z"},"published":"2026-11-06","updated":"2026-11-06","sourceUpdated":"2026-11-06T19:22:06.640Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-77709","references":[{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014"}],"tags":["cve.org"],"ingestedAt":"2026-11-06T20:03:04.278Z","slug":"CVE-2026-77709","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `SonicOS 7.3.3-7015 and older versions`\n- `SonicOS 8.2.2-8015 and older versions`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}