CVE-2026-23563— Privilege escalation in TeamViewer DEX via DeleteFileByPath instruction
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I. Basic Information for CVE-2026-23563
Vulnerability Information
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Vulnerability Title
Privilege escalation in TeamViewer DEX via DeleteFileByPath instruction
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TeamViewer DEX Client 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TeamViewer DEX Client是德国TeamViewer公司的一个数字化员工体验和终端管理软件。 TeamViewer DEX Client 26.1之前版本存在安全漏洞，该漏洞源于文件访问前链接解析不当，可能导致删除受保护的系统文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| TeamViewer | DEX | 0 ~ 26.1 | - |
II. Public POCs for CVE-2026-23563
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · TeamViewer · 2026-01-29 · 9 CVEs total
| CVE-2026-23571 | 6.8 MEDIUM | Command Injection in 1E-Nomad-RunPkgStatusRequest Instruction in TeamViewer DEX |
| CVE-2026-23570 | 6.5 MEDIUM | Log timestamp tampering vulnerability in Content Distribution Service |
| CVE-2026-23569 | 6.5 MEDIUM | Out-of-bounds read vulnerability in Content Distribution Service |
| CVE-2026-23564 | 6.5 MEDIUM | Transmission of Unencrypted Data in Content Distribution Service |
| CVE-2026-23565 | 6.5 MEDIUM | Denial-of-Service in Content Distribution Service |
| CVE-2026-23567 | 6.5 MEDIUM | Integer underflow in Content Distribution Service UDP handler |
| CVE-2026-23566 | 6.5 MEDIUM | Log Injection in Content Distribution Service UDP Handler |
| CVE-2026-23568 | 5.4 MEDIUM | Out-of-bounds read vulnerability in Content Distribution Service |
IV. Related Vulnerabilities
Same product: DEX
- CVE-2026-23570
Log timestamp tampering vulnerability in Content Distributio - CVE-2026-23569
Out-of-bounds read vulnerability in Content Distribution Ser - CVE-2026-23568
Out-of-bounds read vulnerability in Content Distribution Ser - CVE-2026-23567
Integer underflow in Content Distribution Service UDP handle - CVE-2026-23566
Log Injection in Content Distribution Service UDP Handler
Same vendor: TeamViewer
- CVE-2026-23572
Improper Access Control in TeamViewer clients - CVE-2026-23570
Log timestamp tampering vulnerability in Content Distributio - CVE-2026-23569
Out-of-bounds read vulnerability in Content Distribution Ser - CVE-2026-23568
Out-of-bounds read vulnerability in Content Distribution Ser - CVE-2026-23567
Integer underflow in Content Distribution Service UDP handle
Same weakness: CWE-59
- CVE-2021-47949
CyberPanel 2.1 Authenticated Remote Code Execution via Symli - CVE-2026-41882
JetBrains IntelliJ IDEA 后置链接漏洞 - CVE-2026-27105
Dell Alienware Purchased Apps 后置链接漏洞 - CVE-2026-5161
Improper Authentication in TUBITAK BILGEM's Pardus About - CVE-2026-41397
OpenClaw < 2026.3.31 - Sandbox Escape via Unrestricted File
V. Comments for CVE-2026-23563
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