CVE-2026-35364

MEDIUM

uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition

Title source: cna
STIX 2.1

Description

A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.

References (1)

Core 1
Core References
Issue Tracking issue-tracking
https://github.com/uutils/coreutils/issues/10015

Scores

CVSS v3 6.3
EPSS 0.0009
EPSS Percentile 0.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-367
Status published
Products (3)
crates.io/coreutils 0crates.io
Uutils/coreutils
uutils/coreutils
Published Apr 22, 2026
Tracked Since Apr 22, 2026