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CVE-2026-19743

Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer Desktop Clients

High7.8EPSS 0.15%
Published
Updated
Reserved
Assigned by
TV

Description

Improper path validation in the local IPC service of TeamViewer Full Client and Host on Windows, Linux, and macOS prior to version 15.82 allows a local authenticated user with low privileges to perform arbitrary file writes with elevated privileges (NT AUTHORITY/SYSTEM \ root). By sending crafted IPC commands to the local service daemon, an attacker could manipulate file paths, leading to local privilege escalation.

Timeline

  1. ID reserved

    By TV

  2. · 47 days later

    Published

  3. · 1 day later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-19743, by who scored it
Scored byCVSSScoreVector
TVCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Deferred3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.15% · top 96% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • TeamViewer · Full Client

    • affected 15.0 – < 15.82
    • affected 15.64.0 (Legacy Windows 7 & 8) – < 15.64.8 (Legacy Windows 7 & 8)
    • affected 14.7.0 (Windows) – < 14.7.48855 (Windows)
    • affected 13.2.0 (Windows) – < 13.2.36230 (Windows)
    • affected 14.7.0 (Linux) – < 14.7.48855 (Linux)
    • affected 13.2.0 (Linux) – < 13.2.153995 (Linux)
    • affected 14.7.0 (MacOS) – < 14.7.48855 (MacOS)
    • affected 13.2.0 (MacOS) – < 13.2.153994 (MacOS)

  • TeamViewer · Host

    • affected 15.0 – < 15.82
    • affected 15.64.0 (Legacy Windows 7 & 8) – < 15.64.8 (Legacy Windows 7 & 8)
    • affected 14.7.0 (Windows) – < 14.7.48855 (Windows)
    • affected 13.2.0 (Windows) – < 13.2.36230 (Windows)
    • affected 14.7.0 (Linux) – < 14.7.48855 (Linux)
    • affected 13.2.0 (Linux) – < 13.2.153995 (Linux)
    • affected 14.7.0 (MacOS) – < 14.7.48855 (MacOS)
    • affected 13.2.0 (MacOS) – < 13.2.153994 (MacOS)

What to do

Solution: Update to the latest version.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2026-19743 badge
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Record last updated .