CVE-2026-35355

MEDIUM EPSS 2.0%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
6.3 CVSS 3.1
Medium
Find Similar
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
6.3
Exploitability
1.0
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.0% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-367

Affected Products 1

VendorProductVersionRange
uutilscoreutils* <0.6.0

References 2

  • github.com https://github.com/uutils/coreutils/pull/10067
    ExploitIssue TrackingPatch
  • github.com https://github.com/uutils/coreutils/releases/tag/0.6.0
    Release Notes

Remediation

  • github.com https://github.com/uutils/coreutils/pull/10067
    ExploitIssue TrackingPatch