CVE-2026-38753

MEDIUM

Busybox 1.38.0 - Denial of Service via Crafted AWK Script in awk_sub() Function

Title source: llm

Description

A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.

References (3)

Core 3

Core References

http://busybox.com

https://lists.busybox.net/pipermail/busybox/2026-June/092352.html

https://busybox.net

Scores

CVSS v3 4.9

EPSS 0.0014

EPSS Percentile 4.3%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-416

Status published

Products (2)

busybox/busybox 1.38.0

BusyBox/BusyBox 1.00 - 1.38.0

Published Jul 15, 2026

Tracked Since Jul 16, 2026