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Vulnerabilities CVE-2026-66050

CVE-2026-66050

High
Open
TLP:CLEAR

NitroShare Desktop 0.3.4 Path Traversal via LAN File Transfer Server

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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.

Details

CVSS Score
8.7
EPSS Score
0.74%

51.5th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 27, 2026
Last Modified
Jul 27, 2026
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