TeamViewer DEX 1E Client <26.1 - Link Resolution Deletes System Files
CVE-2026-23563 Published on January 29, 2026

Privilege escalation in TeamViewer DEX via DeleteFileByPath instruction
Improper Link Resolution Before File Access (invoked by 1EExplorerTachyonCoreDeleteFileByPath instruction) in TeamViewer DEX - 1E Client before version 26.1 on Windows allows a lowprivileged local attacker to delete protected system files via a crafted RPC control junction or symlink that is followed when the delete instruction executes.

NVD

Vulnerability Analysis

CVE-2026-23563 can be exploited with network access, requires user interaction and user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
HIGH
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is an insecure temporary file Vulnerability?

The software attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

CVE-2026-23563 has been classified to as an insecure temporary file vulnerability or weakness.


Affected Versions

TeamViewer DEX:

Exploit Probability

EPSS
0.04%
Percentile
10.89%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.