CVSS 4.0
7.7 highCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-119744
High (7.7).
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.
Severity
CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- CWE
- CWE-290 Authentication Bypass by Spoofing
- OWASP Top 10
- A07:2025 Authentication Failures
- Published
- Record from
- the NVD, synced
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Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Cendio ThinLinc | from 4.1.0 before 4.15.1 |
| Cendio ThinLinc | from 4.16.0 before 4.16.1 |
| Cendio ThinLinc | from 4.17.0 before 4.17.1 |
| Cendio ThinLinc | from 4.18.0 before 4.18.1 |
| Cendio ThinLinc | from 4.19.0 before 4.19.1 |
| Cendio ThinLinc | from 4.20.0 before 4.20.1 |
Attack patterns (CAPEC)
- CAPEC-21 Exploitation of Trusted Identifiers Likelihood: High · Severity: High
- CAPEC-22 Exploiting Trust in Client Likelihood: High · Severity: High
- CAPEC-59 Session Credential Falsification through Prediction Likelihood: High · Severity: High
- CAPEC-60 Reusing Session IDs (aka Session Replay) Likelihood: High · Severity: High
- CAPEC-94 Adversary in the Middle (AiTM) Likelihood: High · Severity: Very High
- CAPEC-459 Creating a Rogue Certification Authority Certificate Likelihood: Medium · Severity: Very High
- CAPEC-461 Web Services API Signature Forgery Leveraging Hash Function Extension Weakness Severity: High
- CAPEC-473 Signature Spoof
- CAPEC-476 Signature Spoofing by Misrepresentation Likelihood: Low · Severity: High
- CAPEC-667 Bluetooth Impersonation AttackS (BIAS) Likelihood: Medium · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.