CVE-2026-35358

Name: CVE-2026-35358
Creator: NVD / NIST
Published: 2026-04-22T17:16:38.393+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2026-35358 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and block device nodes as stream sources rather than preserving them. Because the implementation reads bytes into regular files at the destination instead of using mknod, device semantics are destroyed (e.g., /dev/null becomes a regular file). EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and block device nodes as stream sources rather than preserving them. Because the implementation reads bytes into regular files at the destination instead of using mknod, device semantics are destroyed (e.g., /dev/null becomes a regular file). This behavior can lead to runtime denial of service through disk exhaustion or process hangs when reading from unbounded device nodes.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.18%

7.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-706

Affected Software

Vendor	Product	Versions
Uutils	Coreutils	< 0.7.0

References

https://github.com/uutils/coreutils/issues/9746Exploit, Issue Tracking
https://github.com/uutils/coreutils/pull/11163Issue Tracking, Patch
https://github.com/uutils/coreutils/releases/tag/0.7.0Release Notes
https://github.com/uutils/coreutils/issues/9746Exploit, Issue Tracking

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-35358?

How severe is CVE-2026-35358?

CVE-2026-35358 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2026-35358?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-35358?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST