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CVE-2026-119744Cendio ThinLinc Improper Authentication via Web Access
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.
7.7 HIGHEPSS 0.43%Not in KEVNVD: Received
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 7.7 | HIGH | 4.0VulnCheck (CNA) | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 8.8 | HIGH | 3.1VulnCheck (CNA) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Details
- CVE ID
- CVE-2026-119744
- Status
- Received
- Assigner (CNA)
- VulnCheck
- Published
- Nov 5, 2026
- Last modified
- 2026-11-05 17:17 UTC
- Weaknesses
- CWE-290 · Authentication Bypass by Spoofing
Affected Products
As published by the CNA in the CVE record.
CendioThinLinc6 version ranges
- 4.1.0 before 4.15.1
- 4.16.0 before 4.16.1
- 4.17.0 before 4.17.1
- 4.18.0 before 4.18.1
- 4.19.0 before 4.19.1
- 4.20.0 before 4.20.1
References
- community.thinlinc.com https://community.thinlinc.com/t/thinlinc-4-15-1-through-4-20-1-security-release/1985
- community.thinlinc.com https://community.thinlinc.com/t/urgent-thinlinc-security-issue/1970
- vulncheck.com https://www.vulncheck.com/advisories/cendio-thinlinc-improper-authentication-via-web-access