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CVE-2026-66050 is a path traversal vulnerability affecting NitroShare Desktop through version 0.3.4. The flaw exists in the application's LAN file transfer server, which fails to properly validate file paths supplied in the JSON item header name field during inbound transfers. By sending a crafted filename containing directory traversal sequences, an unauthenticated attacker on the same network can cause the application to write files outside the intended transfer root directory. Because writes occur with the privileges of the current user, the attacker can place files in arbitrary user-writable locations. On Windows systems, this includes the Startup folder, which can be abused to achieve persistent execution when the user next logs in.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
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1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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