CVE-2026-119744

CVSS 8.8 (high) · published 2026-11-05

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 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.

Weakness: CWE-290

Source: NVD CVE-2026-119744

References

• https://community.thinlinc.com/t/thinlinc-4-15-1-through-4-20-1-security-release/1985
• https://community.thinlinc.com/t/urgent-thinlinc-security-issue/1970
• https://www.vulncheck.com/advisories/cendio-thinlinc-improper-authentication-via-web-access

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