CVE-2025-41421— Privilege Escalation via Symbolic Link Spoofing in TeamViewer Client
Quick assessment
Affected
TeamViewer Full Client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
TeamViewer Full Client和TeamViewer Host都是德国TeamViewer公司的一个远程控制软件。 TeamViewer Full Client和TeamViewer Host 15.70之前版本存在安全漏洞，该漏洞源于符号链接处理不当，可能导致权限提升和信息泄露。
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I. Basic Information for CVE-2025-41421
Vulnerability Information
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Vulnerability Title
Privilege Escalation via Symbolic Link Spoofing in TeamViewer Client
Source: CVE Program / CVE List V5
Vulnerability Description
Improper handling of symbolic links in the TeamViewer Full Client and Host for Windows — in versions prior to 15.70 of TeamViewer Remote and Tensor — allows an attacker with local, unprivileged access to a device lacking adequate malware protection to escalate privileges by spoofing the update file path. This may result in unauthorized access to sensitive information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
TeamViewer Full Client和TeamViewer Host 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TeamViewer Full Client和TeamViewer Host都是德国TeamViewer公司的一个远程控制软件。 TeamViewer Full Client和TeamViewer Host 15.70之前版本存在安全漏洞，该漏洞源于符号链接处理不当，可能导致权限提升和信息泄露。
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 | Full Client | 11.0.0 ~ 15.70 | - |
|
| TeamViewer | Host | 11.0.0 ~ 15.70 | - |
|
II. Public POCs for CVE-2025-41421
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: Full Client
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CVE-2026-92370
Remote Session Access Control Bypass Leading to Remote Code -
CVE-2026-92371
Local Privilege Escalation via Improper Link Resolution in C -
CVE-2026-92368
Heap-Based Buffer Overflow in TeamViewer Session Recording P -
CVE-2026-92369
Time-of-check Time-of-use (TOCTOU) Race Condition in TeamVie -
CVE-2026-19743
Improper Limitation of a Pathname to a Restricted Directory
Same vendor: TeamViewer
-
CVE-2026-92370
Remote Session Access Control Bypass Leading to Remote Code -
CVE-2026-92371
Local Privilege Escalation via Improper Link Resolution in C -
CVE-2026-92368
Heap-Based Buffer Overflow in TeamViewer Session Recording P -
CVE-2026-92369
Time-of-check Time-of-use (TOCTOU) Race Condition in TeamVie -
CVE-2026-19743
Improper Limitation of a Pathname to a Restricted Directory
Same weakness: CWE-59
-
CVE-2026-103263
Tornado before 6.5.9 StaticFileHandler Path Traversal via Sy -
CVE-2026-102113
Kiteworks Core Local Privilege Escalation -
CVE-2026-102118
Kiteworks Core before version 9.5.0 is vulnerable to Local P -
CVE-2026-81310
Linux图像扫描驱动存在链接跟随漏洞 -
CVE-2026-102242
Path Traversal via Symlink Following in allowedLocalRoots in
V. Comments for CVE-2025-41421
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