{"id":"CVE-2026-119744","title":"Cendio ThinLinc Improper Authentication via Web Access","summary":"Cendio ThinLinc contains an improper authentication vulnerability in its browser-based web client (tlwebaccess) that allows an authenticated attacker to impersonate any other user, including root, by exploiting flaws in multi-step authen…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-290"],"vendor":"Cendio","product":"ThinLinc","affected":["ThinLinc >= 4.1.0 < 4.15.1","ThinLinc >= 4.16.0 < 4.16.1","ThinLinc >= 4.17.0 < 4.17.1","ThinLinc >= 4.18.0 < 4.18.1","ThinLinc >= 4.19.0 < 4.19.1","ThinLinc >= 4.20.0 < 4.20.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-05T16:24:14.643454Z"},"published":"2026-11-05","updated":"2026-11-05","sourceUpdated":"2026-11-05T16:24:31.150Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119744","references":[{"url":"https://community.thinlinc.com/t/thinlinc-4-15-1-through-4-20-1-security-release/1985","label":"ThinLinc 4.15.1 through 4.20.1 security release"},{"url":"https://community.thinlinc.com/t/urgent-thinlinc-security-issue/1970","label":"Urgent: ThinLinc security issue"},{"url":"https://www.vulncheck.com/advisories/cendio-thinlinc-improper-authentication-via-web-access","label":"VulnCheck Advisory: Cendio ThinLinc Improper Authentication via Web Access"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T22:38:31.349Z","slug":"CVE-2026-119744","body":"## Overview\n\nCendio ThinLinc contains an improper authentication vulnerability in its browser-based web client (tlwebaccess) that allows an authenticated attacker to impersonate any other user, including root, by exploiting flaws in multi-step authentication flows such as one-time passwords, login banners, or expired password prompts. Attackers can leverage this authentication bypass during the multi-step login process to gain unauthorized access to other user accounts, including administrative privileges, in versions from 4.1.0 through 4.20.0.\n\n## Affected\n\n- `ThinLinc >= 4.1.0 < 4.15.1`\n- `ThinLinc >= 4.16.0 < 4.16.1`\n- `ThinLinc >= 4.17.0 < 4.17.1`\n- `ThinLinc >= 4.18.0 < 4.18.1`\n- `ThinLinc >= 4.19.0 < 4.19.1`\n- `ThinLinc >= 4.20.0 < 4.20.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}