CVE-2023-42364: busybox Use After Free
CVSS: 5.5v3.1MediumModified
AliasesALPINE-CVE-2023-42364UBUNTU-CVE-2023-42364DEBIAN-CVE-2023-42364CGA-269v-hggr-3fqvCGA-6hm2-2wjq-rgm9
Published 27-11-2023Last modified 03-11-2025
Vulnerability summary
CVE-2023-42364 is a medium (CVSS 5.5) Use After Free vulnerability in busybox. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 8 · Related 9Timeline
- 27-11-2023PublishedVulnerability first disclosed.
- 03-11-2025Last modifiedVulnerability information updated.
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 metrics
7 scores · 7 sources · 1 versionMedium 5.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 7 agree
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.43%
Chance of exploitation in the next 30 days
Percentile
36%
Versus all other CVEs
30-day change
0.00 pp
From 0.43% on 19-09-2026
19-09-202619-10-2026
EPSS score0.43%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugs.busybox.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- busybox< 1.35.0-r31 | < 1.36.1-r7 | < 1.36.1-r19 | < 1.36.1-r29 | < 1.36.1-r30
Busybox1 product
- busybox1.36.1
Chainguard1 product
- busyboxAll versions (No fix recorded)
Debian1 product
- busybox< 1:1.35.0-4+deb12u1 | < 1:1.37.0-1
Ubuntu1 product
- busybox< 1:1.36.1-6ubuntu3.1
Wolfi1 product
- busyboxAll versions (No fix recorded)
6 vendors · 6 products
