CVE-2026-38755

LOW

BusyBox 1.38.0 - Denial of Service via Heap Overflow in evalcommand Function

Title source: llm

Description

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

References (3)

Core 3

Core References

https://busybox.com

https://lists.busybox.net/pipermail/busybox/2026-June/092354.html

https://busybox.net

Scores

CVSS v3 2.9

EPSS 0.0021

EPSS Percentile 11.0%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-122 CWE-674

Status published

Products (2)

busybox/busybox 1.38.0

BusyBox/BusyBox 0.52 - 1.38.0

Published Jul 15, 2026

Tracked Since Jul 16, 2026