Vulnerability in Cendio Thinlinc
CVE-2026-119744
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- ThinLinc 4.15.1 through 4.20.1 security release (release-notes, patch)
- Urgent: ThinLinc security issue (vendor-advisory)
- VulnCheck Advisory: Cendio ThinLinc Improper Authentication via Web Access (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119744?
- CVE-2026-119744 is a high-severity vulnerability in Cendio Thinlinc, classified under Authentication Bypass by Spoofing. CVSS score: 8.8/10. Published 2026-11-05.
- How severe is CVE-2026-119744?
- High severity. CVSS v3 base score is 8.8 out of 10.