CVE-2026-35366

MEDIUM EPSS 6.7%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
4.4 CVSS 3.1
Medium
Find Similar
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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 rather than printing the raw bytes. This vulnerability allows malicious environment variables (e.g., adversarial LD_PRELOAD values) to evade inspection by administrators or security auditing tools, potentially allowing library injection or other environment-based attacks to go undetected.

CVSS Details

Base Score
4.4
Exploitability
1.8
Impact
2.5
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
6.7% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-754

Affected Products 1

VendorProductVersionRange
uutilscoreutils* <0.6.0

References 3

  • github.com https://github.com/uutils/coreutils/issues/9701
    ExploitIssue Tracking
  • github.com https://github.com/uutils/coreutils/pull/9728
    Issue TrackingPatch
  • github.com https://github.com/uutils/coreutils/releases/tag/0.6.0
    Release Notes

Remediation

  • github.com https://github.com/uutils/coreutils/pull/9728
    Issue TrackingPatch