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Vulnerabilities

CVE-2026-35359 | BDVDB-2026-328490 Detail

Uutilscoreutils

Description#

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.

Impact#

CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions

Weaknesses#

  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-59 Improper Link Resolution Before File Access ('Link Following')

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.