NetSupport Manager < 14.12.0001 Authenticated Path Traversal Arbitrary File Write RCE
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
NetSupport Manager < 14.12.0001 contains an arbitrary file write vulnerability in its Connectivity Server/Gateway PUTFILE request handler. An attacker with a valid Gateway Key can supply a crafted filename containing directory traversal sequences to write files to arbitrary locations on the server. This can be leveraged to place attacker-controlled DLLs or executables in privileged paths and achieve remote code execution in the context of the NetSupport Manager connectivity service.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NetSupport Software | Manager | before 14.12.0001 | 14.12.0001 | Patch available | CNA |
- Manager VendorNetSupport Software Affected before 14.12.0001 Fixed in 14.12.0001 Patch available CNA
Remediation
- Fix · CNA Manager (NetSupport Software) Fixed in 14.12.0001
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
NetSupport Software Manager — kb.netsupportsoftware.com/knowledge-base/updating-and-secur…
3 records Highest priority Priority HIGH 3 HIGH
Other records, highest priority first
- TI-2025-24328 NetSupport Manager < 14.12.0001 Unauthenticated SQLi Local File DisclosurePriority HIGH 79
- TI-2025-24329 NetSupport Manager < 14.12.0001 Gateway Key Reversible Encoding Credential RecoveryPriority HIGH 70
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34181
- 2026-10-03 Alias added: GHSA-w2fq-8jpx-5f27
References
More NetSupport Software vulnerabilities
- TI-2025-24328 NetSupport Manager < 14.12.0001 Unauthenticated SQLi Local File Disclosure CVSS 4.0HIGH 8.7
- TI-2025-24329 NetSupport Manager < 14.12.0001 Gateway Key Reversible Encoding Credential Recovery CVSS 4.0HIGH 8.4
- TI-2010-03938 NetSupport Manager (NSM) before 11.00.0005 sends HTTP headers with cleartext fields… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2025-34181 · CVE Program
- CVE-2025-34181 · NVD
- FIRST EPSS
- GHSA-w2fq-8jpx-5f27 · GitHub Advisory Database · CC BY 4.0
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