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Vulnerability record · CVE-2023-42364 · published 27 November 2023

CVE-2023-42364: Busybox use after free vulnerability

Busybox · Busybox

A use-after-free vulnerability in BusyBox v.1.36.1 allows attackers to cause a denial of service via a crafted awk pattern in the awk.c evaluate function.

5.5 CVSS 3.1 Medium EPSS 0.43% · top 64.3% CWE-416 · Use after free
5.5CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A use-after-free vulnerability in BusyBox v.1.36.1 allows attackers to cause a denial of service via a crafted awk pattern in the awk.c evaluate function.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugs.busybox.net/show_bug.cgi?id=15868 ExploitVendor Advisory
https://bugs.busybox.net/show_bug.cgi?id=15868 ExploitVendor Advisory
https://lists.debian.org/debian-lts-announce/2025/01/msg00012.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-42364), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.