What is CVE-2026-35355?

CVE-2026-35355 is a medium-severity vulnerability in Uutils Coreutils, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.3/10. Published 2026-04-22.

How severe is CVE-2026-35355?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Uutils Coreutils

CVE-2026-35355

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 oper…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.001 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Uutils Coreutils — versions 0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

security@ubuntu.com (issue-tracking, Exploit, Patch, patch, Issue Tracking)
security@ubuntu.com (vendor-advisory, Release Notes)

Frequently asked questions

What is CVE-2026-35355?: CVE-2026-35355 is a medium-severity vulnerability in Uutils Coreutils, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.3/10. Published 2026-04-22.
How severe is CVE-2026-35355?: Medium severity. CVSS v3 base score is 6.3 out of 10.