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MEDIUM · 4.9

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.

Vulnerability 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.

CVSS Score

4.9

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW

Affected Products

VendorProductVersions
BusyboxBusybox1.38.0

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2026-38753?

CVE-2026-38753 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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.

How severe is CVE-2026-38753?

CVE-2026-38753 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-38753?

Check the references section above for vendor advisories and patch information. Affected products include: Busybox Busybox.