A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk…
Priority LOW 25CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c copyvar function.
Why it matters now
EPSS 0.00393 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-42365
- 2026-10-03 Alias added: GHSA-j44g-3846-7q49
References
More Busybox vulnerabilities
- TI-2016-05394 The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote… CVSS 3.1HIGH 7.5
- TI-2018-15900 Busybox contains a Missing SSL certificate validation vulnerability in The "busybox wget"… CVSS 3.1HIGH 8.1
- TI-2018-15917 BusyBox project BusyBox wget version prior to commit… CVSS 3.1CRITICAL 9.8
- TI-2016-01959 Heap-based buffer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows… CVSS 3.1CRITICAL 9.8
- TI-2025-37846 BusyBox wget thru 1.3.7 accepted raw CR (0x0D)/LF (0x0A) and other C0 control bytes in… CVSS 3.1MEDIUM 6.5
- TI-2023-22583 A use-after-free vulnerability in BusyBox v.1.36.1 allows attackers to cause a denial of… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2023-42365 · CVE Program
- CVE-2023-42365 · NVD
- FIRST EPSS
- GHSA-j44g-3846-7q49 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-42365 · Red Hat security data · CC BY 4.0
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