Path Traversal Vulnerability in NitroShare Desktop by NitroShare
CVE-2026-66050

8.7HIGH

Key Information:

Vendor

Nitroshare

Status
Nitroshare-desktop
Vendor
CVE Published:
27 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-66050?

NitroShare Desktop versions up to 0.3.4 are vulnerable to a path traversal flaw within its LAN file transfer server. This vulnerability allows unauthenticated attackers on the same network to exploit the file transfer feature. By sending a specially crafted filename that contains directory traversal sequences, attackers can write arbitrary files to any location accessible to the current user, including sensitive directories like the Windows Startup folder. This exploitation can lead to unauthorized file modification and potential persistent code execution upon the user's next login.

Affected Version(s)

nitroshare-desktop 0 <= 0.3.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-66050 - Proof of Concept

References

https://github.com/cduram/NotCVE-2026-0009
technical-descriptionexploit
https://www.vulncheck.com/advisories/nitroshare-desktop-p...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Christopher Duram
.