CVE-2026-38753

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.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.4 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://busybox.net
https://lists.busybox.net/pipermail/busybox/2026-June/092352.html	Mailing List Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:busybox:busybox:1.38.0:*:*:*:*:*:*:*

History

20 Jul 2026, 16:16

Type	Values Removed	Values Added
References	~~{'url': 'http://busybox.com', 'tags': ['Product'], 'source': 'cve@mitre.org'}~~	() https://busybox.net -

20 Jul 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://lists.busybox.net/pipermail/busybox/2026-June/092352.html - Mailing List, Vendor Advisory, Patch~~	() https://lists.busybox.net/pipermail/busybox/2026-June/092352.html - Mailing List, Patch, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~7.5~~	v2 : unknown v3 : 4.9

16 Jul 2026, 19:58

Type	Values Removed	Values Added
First Time		Busybox Busybox busybox
CPE		cpe:2.3:a:busybox:busybox:1.38.0:::::::*
References	~~() http://busybox.com -~~	() http://busybox.com - Product
References	~~() https://lists.busybox.net/pipermail/busybox/2026-June/092352.html -~~	() https://lists.busybox.net/pipermail/busybox/2026-June/092352.html - Mailing List, Vendor Advisory, Patch

16 Jul 2026, 16:19

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CWE		CWE-416

15 Jul 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-15 21:16

Updated : 2026-07-20 16:16

NVD link : CVE-2026-38753

Mitre link : CVE-2026-38753

CVE.ORG link : CVE-2026-38753

JSON object : View

Products Affected

busybox

busybox

CWE

CWE-416

Use After Free

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