CVE-2026-38753

EUVD-2026-44849
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.9 MEDIUM
LOCAL
HIGH
NONE
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 15.6%
Affected Products (NVD)
VendorProductVersion
busyboxbusybox
1.38.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
busybox
bookworm
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
1:1.38.0-3
fixed
sid
1:1.38.0-3
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
busybox
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
trusty
needs-triage
xenial
needs-triage
Azure Linux logo
Azure Linux Releases
Azure Package
Release
busybox
Azure Linux 3.0
0:1.36.1-26.azl3
fixed
Common Weakness Enumeration
References
https://busybox.net
https://lists.busybox.net/pipermail/busybox/2026-June/092352.html