SEPTEMBER 20, 2026
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Case File

CVE-2026-66050

HIGH · CVSS 7.5 EPSS 0.74% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-27 · Last synced 2026-08-26

CyberRota Analysis

AI-Generated

NitroShare Desktop versions up to 0.3.4 are vulnerable to a path traversal flaw in their LAN file transfer server, allowing unauthenticated attackers on the same network to write arbitrary files by exploiting directory traversal sequences in the JSON item header. This vulnerability can lead to unauthorized file placement in sensitive locations, such as the Windows Startup folder, facilitating persistent code execution upon user login. Organizations using NitroShare should prioritize patching this vulnerability to mitigate the risk of unauthorized access and potential malware deployment.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit code execution
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-66050
Severity
HIGH
CVSS
7.5
EPSS
0.74%
Windows

Original NVD Description

NitroShare Desktop through 0.3.4 contains a path traversal vulnerability in its LAN file transfer server that allows unauthenticated attackers on the same network to write arbitrary files by sending a crafted filename containing directory traversal sequences in the JSON item header name field. Attackers can exploit the lack of path validation to write files outside the transfer root directory to arbitrary locations the current user has write access, including the Windows Startup folder, enabling persistent code execution on the next user login.