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.
Published: 2026-11-05
Score: 7.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 06 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-841
References
Metrics threat_severity

None

threat_severity

Important


Thu, 05 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 05 Nov 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title Cendio ThinLinc Improper Authentication via Web Access
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.7, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-05T16:24:31.150Z

Reserved: 2026-10-30T15:31:52.079Z

Link: CVE-2026-119744

cve-icon Vulnrichment

Updated: 2026-11-05T16:24:05.476Z

cve-icon NVD

Status : Received

Published: 2026-11-05T15:17:20.557

Modified: 2026-11-05T17:17:56.500

Link: CVE-2026-119744

cve-icon Redhat

Severity : Important

Publid Date: 2026-11-05T14:50:42Z

Links: CVE-2026-119744 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T13:45:04Z

Weaknesses