GurumDDS Heap-based Incorrect Calculation of Buffer Size
Priority MEDIUM 45CWE-131Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-131 and the CVSS impact.
Summary
All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.013 70th 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
- No
- 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 |
|---|---|---|---|---|---|
| GurumNetworks | GurumDDS | all versions | — | No fix listed | CNA |
- GurumDDS VendorGurumNetworks 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-2021-38423
- 2026-10-03 Alias added: GHSA-j9pc-mr89-w3h7
References
More Gurumdds vulnerabilities
- TI-2021-16041 GurumDDS Heap-based Buffer Overflow CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-38423 · CVE Program
- CVE-2021-38423 · NVD
- FIRST EPSS
- GHSA-j9pc-mr89-w3h7 · 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