CVE-2026-38754

State: Published
Severity: 5.1 Medium
Published: Jul 15, 2026
Updated: Jul 22, 2026
Reserved: Apr 6, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.1 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	mitre
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-125 Out-of-bounds Read
CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
BusyBoxBusyBox	1.00 through 1.38.0Affected

References

https://busybox.net/
https://lists.busybox.net/pipermail/busybox/2026-June/092353.html
https://lists.busybox.net/pipermail/busybox/2026-June/092360.html

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