CVE-2026-19743: Improper path validation in the local IPC service of TeamViewer Full Client and Host on Windows, Linux, and ma

Routine

HIGH 7.8WATCHLIST

CVE-2026-19743 is a high-severity flaw (CVSS 7.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-09-29
Last modified	2026-09-30

Publisher (CNA): TeamViewer Germany GmbH

Last updated 2026-09-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-09-29 16:17 UTCPublished CVE record published
2026-09-30 16:17 UTCUpdated Record last modified

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-19743?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-19743 being exploited?

CVE-2026-19743 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-19743 affect?

CVE-2026-19743 affects affected software. Severity is high (CVSS 7.8). 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 pr

How urgent is CVE-2026-19743?

Priority 33/100. High severity; On your watchlist

Software pages

Windows vulnerabilities · macOS vulnerabilities · Splashtop and AnyDesk vulnerabilities

References

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