CVE-2025-34181

NetSupport Manager < 14.12.0001 Authenticated Path Traversal Arbitrary File Write RCE

HIGH
8.7
CVSS Score
Published: December 15, 2025 at 02:42 PM UTC
Updated: October 23, 2026 at 10:10 PM UTC
1 product affected across 1 vendorNetSupport Manager

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Severity
HIGH8.7
Exploit prediction
EPSS 1%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 14.12.00010
Affected range stops below 14.12.0001, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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