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CVE-2026-35355

6.3 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.3 · uutilsNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*

References 3