Arbitrary file write via unsanitized remote filenames
Published Aug 26, 2026 · Updated Aug 26, 2026
Path traversal in TeamViewer Desktop Clients before 15.81.5 allows remote authenticated users to write arbitrary local files. During file transfer or virtual file clipboard use, the receiving client creates a remote peer-supplied filename without sanitizing traversal sequences. A remote session participant must induce file receipt and user interaction is required; the write uses the affected user's privileges and enables code execution when a suitable destination is targeted.
Summary
What happened
Path traversal in TeamViewer Desktop Clients before 15.81.5 allows remote authenticated users to write arbitrary local files. During file transfer or virtual file clipboard use, the receiving client creates a remote peer-supplied filename without sanitizing traversal sequences. A remote session participant must induce file receipt and user interaction is required; the write uses the affected user's privileges and enables code execution when a suitable destination is targeted.
The record
- CVE
- CVE-2026-16444
- Published
- Aug 26, 2026
- Updated
- Aug 26, 2026
- Vendor
- TeamViewer
- Product
- TeamViewer Desktop Clients
- Classifications
- CWE-73, CAPEC-126, T1105
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 26, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=13.0 <13.2.153978
- Affected versionversion=13.0 <13.2.153981
- Affected versionversion=13.0 <13.2.36229
- Affected versionversion=14.0 <14.7.48833
- Affected versionversion=14.0 <14.7.48838
- Affected versionversion=15.0 <15.81.5
- Affected versionversion=15.64.0 <15.64.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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