Nginx NJS v0.7.10 was discovered to contain an illegal memcpy via the function njs_vmcode_return at src/njs_vmcode.c.
Priority MEDIUM 40CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Nginx NJS v0.7.10 was discovered to contain an illegal memcpy via the function njs_vmcode_return at src/njs_vmcode.c.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00659 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-27729
- 2026-10-03 Alias added: GHSA-2jqf-9377-3hhp
- 2026-10-09 EPSS moved to the 50th–90th percentile
References
More F5 Njs vulnerabilities
- TI-2022-21129 Nginx NJS v0.7.2 was discovered to contain a heap-use-after-free bug caused by illegal… CVSS 3.1CRITICAL 9.8
- TI-2020-13678 Buffer Overflow found in Nginx NJS allows a remote attacker to execute arbitrary code via… CVSS 3.1CRITICAL 9.8
- TI-2020-13676 Buffer Overflow vulnerabilty found in Nginx NJS v.0feca92 allows a remote attacker to… CVSS 3.1CRITICAL 9.8
- TI-2023-12380 Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function… CVSS 3.1HIGH 7.5
- TI-2023-12378 Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function… CVSS 3.1HIGH 7.5
- TI-2023-12377 Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function… CVSS 3.1HIGH 7.5
Sources
- CVE-2023-27729 · CVE Program
- CVE-2023-27729 · NVD
- FIRST EPSS
- GHSA-2jqf-9377-3hhp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences