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No exploitation reportedAwaiting NVD analysis

CVE-2026-119744

Cendio ThinLinc Improper Authentication via Web Access

No exploitation reported by the sources we read.

  • Published2026-11-05
  • WeaknessCWE-290

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0514:50CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Cendio ThinLincother versions: not affected
    Affected
    • ≥ 4.1.0, < 4.15.1fixed in 4.15.1semver
    • ≥ 4.16.0, < 4.16.1fixed in 4.16.1semver
    • ≥ 4.17.0, < 4.17.1fixed in 4.17.1semver
    • ≥ 4.18.0, < 4.18.1fixed in 4.18.1semver
    • ≥ 4.19.0, < 4.19.1fixed in 4.19.1semver
    • ≥ 4.20.0, < 4.20.1fixed in 4.20.1semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-05

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-119744 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 4.07.72026-11-05
  • CNACVSS 3.18.82026-11-05
  • NVDCVSS 3.18.8read 2026-11-05
  • CNAweakness (CWE)CWE-2902026-11-05
  • NVDweakness (CWE)CWE-290read 2026-11-05

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-11-05
Last Modified
2026-11-05
NVD status
Received

Frequently asked questions

What is 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.

Is CVE-2026-119744 actively exploited?

Active exploitation of CVE-2026-119744 has not been confirmed.

What is the CVSS score for CVE-2026-119744?

CVE-2026-119744 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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