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CWE-40: Path Traversal: '\\UNC\share\name\' (Windows UNC Share)

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The product accepts input that identifies a Windows UNC share ('\\UNC\share\name') that potentially redirects access to an unintended location or arbitrary file.

What the weakness is: CWE-40 at MITRE. All weaknesses

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Show the promptExplain CWE-40: Path Traversal: '\\UNC\share\name\' (Windows UNC Share) and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/40.html and https://cve.bz/cve/cwe/40?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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    A vulnerability in Cerberus FTP Server allows an authenticated remote attacker to perform UNC path injection via a manipulated parameter. By supplying a malicious SMB share path, an attacker can execute authentication coercion against the …

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  3. 8.8CVE-2026-27615EPSS 0.2%

    ADB Explorer is a fluent UI for ADB on Windows. In versions prior to Beta 0.9.26022, ADB-Explorer allows the `ManualAdbPath` settings variable, which determines the path of the ADB binary to be executed, to be set to a Universal Naming Con…

  4. 5.0CVE-2025-32103EPSS 18%

    CrushFTP 9.x and 10.x through 10.8.4 and 11.x through 11.3.1 allows directory traversal via the /WebInterface/function/ URI to read files accessible by SMB at UNC share pathnames, bypassing SecurityManager restrictions.

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    An improper input validation vulnerability has been discovered that could allow an adversary to inject a UNC path via a malicious project file. This allows an adversary to capture NLTMv2 hashes and potentially crack them offline.

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