CVE-2023-42363

Name: CVE-2023-42363
Creator: NVD / NIST
Published: 2023-11-27T22:15:07.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2023-42363 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox v.1.36.1.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox v.1.36.1.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.43%

34.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Busybox	Busybox	1.36.1

References

https://bugs.busybox.net/show_bug.cgi?id=15865Exploit, Issue Tracking, Vendor Advisory
https://bugs.busybox.net/show_bug.cgi?id=15865Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Nov 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-42363?

A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox v.1.36.1.

How severe is CVE-2023-42363?

CVE-2023-42363 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2023-42363?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-42363?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST