CVE-2026-38754

A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.

CVE-2026-38754 is fixed in busybox on 1 platform, first by DEBIAN-CVE-2026-38754, released July 31, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0024

14th percentile

A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
busybox · Debian 14	1:1.38.0-3	DEBIAN-CVE-2026-38754	Jul 31, 2026
busybox · opensuse-leap 16.0	1.37.0-160000.7.1	OPENSUSE-SU-2026:22040-1	Oct 6, 2026
busybox · sles 15.7	1.37.0-150700.18.21.1	SUSE-SU-2026:3933-1	Sep 3, 2026
busybox · sles 16.0	1.37.0-160000.7.1	SUSE-SU-2026:24154-1	Oct 6, 2026

Details

Published
July 15, 2026
Weakness
Heap-based Buffer Overflow
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-38754

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/cve/CVE-2026-38754">CVE-2026-38754 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Is this on your machines?

Patchblox finds every install below the fixed version on Windows, macOS and Linux, and updates them through your release rings.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.