{"id":"CVE-2021-47764","title":"AbsoluteTelnet 11.24 - 'Phone' Denial of Service (PoC)","summary":"AbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating DialUp connection and license name fields. Attackers can generate a 1000-character payload and paste it …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-787"],"vendor":"Celestialsoftware","product":"AbsoluteTelnet","affected":["AbsoluteTelnet 11.24"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-02-18T20:27:12.088965Z"},"exploitAvailable":true,"published":"2026-01-15","updated":"2026-10-01","sourceUpdated":"2026-10-01T15:19:38.873Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2021-47764","references":[{"url":"https://www.exploit-db.com/exploits/50511","label":"ExploitDB-50511"},{"url":"https://www.celestialsoftware.net/","label":"Vendor Homepage"}],"tags":["cve.org","exploit-available"],"epss":0.00196,"epssPercentile":0.08434,"ingestedAt":"2026-10-01T15:48:17.874Z","slug":"CVE-2021-47764","body":"## Overview\n\nAbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating DialUp connection and license name fields. Attackers can generate a 1000-character payload and paste it into specific input fields to trigger application crashes and force unexpected termination.\n\n## Affected\n\n- `AbsoluteTelnet 11.24`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}