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CVE-2023-42364

18
FAUCET Score

CVE-2023-42364 is a use-after-free vulnerability in BusyBox v.1.36.1, specifically within the awk.c evaluate function, allowing attackers to trigger a denial of service. With a CVSS score of 5.5 (Medium), it requires local access and user interaction (UI:R) but has low attack complexity, leading to high availability impact. While there is no known active exploitation, public exploit code, or KEV entry, the vulnerability has garnered some community discussion and media coverage, indicating awareness despite its inactive hot list status.

Impacted Technologies

VendorProductVersion(s)CPE
1.36.1CPE matchmatch criteria
cpe:2.3:a:busybox:busybox:1.36.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 42nd percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

microsoftpatch availablevia msrc
Product: 20038-17086
microsoftpatch availablevia msrc
Product: 19943-17084
microsoftpatch availablevia msrc
Product: 18180-16823Fixed in: 1.35.0-11
microsoftpatch availablevia msrc
Product: 18181-17084Fixed in: 1.36.1-7
microsoftpatch availablevia msrc
Product: cbl2 busybox 1.35.0-11 on CBL Mariner 2.0Fixed in: 1.35.0-11
microsoftpatch availablevia msrc
Product: azl3 busybox 1.36.1-7 on Azure Linux 3.0Fixed in: 1.36.1-7
microsoftpatch availablevia msrc
Product: cbl2 busybox 1.35.0-13 on CBL Mariner 2.0
microsoftpatch availablevia msrc
Product: azl3 busybox 1.36.1-12 on Azure Linux 3.0
nodejspatch availablevia llm_extracted
View patch
pjsippatch availablevia llm_extracted
View patch

Vendor Advisories (4)

nodejsllm-nodejs-302528ae26f0d946CRITICAL

HP ThinPro 8.1 SP4 Security Updates

Oct 29, 2024
pjsipllm-pjsip-7ba3ec379210ac70CRITICAL

HP ThinPro 8.1 SP4 Security Updates

Oct 29, 2024
redhatCVE-2023-42364Moderate

busybox: use-after-free

Nov 28, 2023
microsoft2023-Nov/CVE-2023-42364

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.

Nov 14, 2023

References

lists.debian.org / debian-lts-announce/2025/01/msg00012.html
bugs.busybox.net / show_bug.cgi
ExploitVendor Advisory