EUVD-2026-25000CVSS VectorNVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
1DescriptionNVD
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the cp utility of uutils coreutils allows an attacker to bypass no-dereference intent. The utility checks if a source path is a symbolic link using path-based metadata but subsequently opens it without the O_NOFOLLOW flag. An attacker with concurrent write access can swap a regular file for a symbolic link during this window, causing a privileged cp process to copy the contents of arbitrary sensitive files into a destination controlled by the attacker.
AnalysisAI
Time-of-Check to Time-of-Use (TOCTOU) vulnerability in uutils coreutils cp utility allows local attackers with write access to bypass no-dereference protections and read arbitrary sensitive files. The cp command checks symbolic link status via metadata but opens files without O_NOFOLLOW, permitting race condition exploitation where an attacker swaps a regular file for a symbolic link between check and use, causing a privileged cp process to copy sensitive file contents to attacker-controlled destinations. …
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External POC / Exploit Code
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