CVE-2026-23563 Privilege escalation in TeamViewer DEX via DeleteFileByPath instruction
A local attacker can escalate privileges by deleting protected system files via a crafted symlink in TeamViewer DEX client.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-23563?
CVE-2026-23563 is a medium-severity vulnerability in TeamViewer DEX, published on 29 Jan 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Improper Link Resolution Before File Access (invoked by 1E‑Explorer‑TachyonCore‑DeleteFileByPath instruction) in TeamViewer DEX - 1E Client before version 26.1 on Windows allows a low‑privileged local attacker to delete protected system files via a crafted RPC control junction or symlink that is followed when the delete instruction executes.
Weakness: CWE-59
Which versions are affected by CVE-2026-23563?
It affects 1 product.
Products include Teamviewer Digital Employee Experience.
How do I fix CVE-2026-23563?
No fix has been published for CVE-2026-23563 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23563 being exploited?
There is no known exploitation of CVE-2026-23563 in the wild and no public exploit code.
Other vulnerabilities in TeamViewer DEX
- CVE-2025-44016 File Hash Validation Bypass in NomadBranch.exe
- CVE-2025-64986 Command Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort Instruction
- CVE-2025-64987 Command Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC Instruction
- CVE-2025-64988 Command Injection in 1E-Nomad-GetCmContentLocations Instruction
- CVE-2025-64989 Command Injection in 1E-Explorer-TachyonCore-FindFileBySizeAndHash Instruction
Sources
Also known as GHSA-82cg-rxq8-hc7m.