What is CVE-2026-35366?

CVE-2026-35366 is a medium-severity vulnerability in Uutils Coreutils, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 4.4/10. Published 2026-04-22.

How severe is CVE-2026-35366?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Uutils Coreutils

CVE-2026-35366

The printenv utility in uutils coreutils fails to display environment variables containing invalid UTF-8 byte sequences. While POSIX permits arbitrary bytes in environment strings, the uutils implementation silently skips these entries rat…

EPSS: 0.000 (2.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Uutils Coreutils — versions 0

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

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

Frequently asked questions

What is CVE-2026-35366?: CVE-2026-35366 is a medium-severity vulnerability in Uutils Coreutils, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 4.4/10. Published 2026-04-22.
How severe is CVE-2026-35366?: Medium severity. CVSS v3 base score is 4.4 out of 10.