CVE-2026-119744
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductThinLinc
PublishedNov 5, 2026
First seenNov 5, 2026
Weakness typeCWE-290CWE-290
How to fix
Update
- Cendio ThinLinc4.15.1, 4.16.1, 4.17.1, 4.18.1, 4.19.1, 4.20.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Cendio ThinLinc | 4.1.0 ≤ v < 4.15.1, 4.16.0 ≤ v < 4.16.1, 4.17.0 ≤ v < 4.17.1, 4.18.0 ≤ v < 4.18.1, 4.19.0 ≤ v < 4.19.1, 4.20.0 ≤ v < 4.20.1 | 4.15.1, 4.16.1, 4.17.1, 4.18.1, 4.19.1, 4.20.1 |
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