CVE-2025-34181
HighCVSS 8.7Exploitation Probability (EPSS)
Elevated risk63th percentile - higher than 63% of all known CVEs
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.
Risk Assessment
An attacker with a valid Gateway Key can write files to arbitrary locations and achieve remote code execution, leading to full server compromise.
Recommendation
Upgrade NetSupport Manager to version 14.12.0001 or later. Protect Gateway Keys and monitor for unusual file write operations.
Other vulnerabilities in NetSupport Manager
See all- CVE-2025-34180High
NetSupport Manager before 14.12.0001 relies on a shared Gateway Key for authentication. The key is stored using a reversible encoding scheme, allowing an attacker with access to a client configuration file to recover the key and gain unauthorized access to connectivity services and remote control of systems.
- CVE-2025-34179High
NetSupport Manager < 14.12.0001 contains an unauthenticated SQL injection vulnerability in its Connectivity Server/Gateway HTTPS request handling. The server evaluates request URIs using an unsanitized SQLite query against the FileLinks table in gateway.db. By injecting SQL through the LinkName/URI value, a remote attacker can control the FileName field used by the server to read and return files from disk, resulting in arbitrary local file disclosure.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS