Eclipse CycloneDDS Write-what-where Condition
Priority MEDIUM 46CWE-123Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Eclipse CycloneDDS versions prior to 0.8.0 are vulnerable to a write-what-where condition, which may allow an attacker to write arbitrary values in the XML parser.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02146 82nd percentileScored 2026-11-07
Fix Fixed CycloneDDS (Eclipse): 0.8.0
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 |
|---|---|---|---|---|---|
| Eclipse Foundation | CycloneDDS | before 0.8.0 | 0.8.0 | Patch available | CNA |
- CycloneDDS VendorEclipse Foundation Affected before 0.8.0 Fixed in 0.8.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:cyclonedds:*:*:*:*:*:*:*:* | before 0.8.0 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:cyclonedds:*:*:*:*:*:*:*:* Versions before 0.8.0 Vulnerable ·Eclipse Foundation
Remediation
- Fix · CNA CycloneDDS (Eclipse) Fixed in 0.8.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Eclipse CycloneDDS 0.8.0
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2021-16045 Eclipse CycloneDDS Improper Handling of Syntactically Invalid StructurePriority MEDIUM 46
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38441
- 2026-10-03 Alias added: GHSA-9v3v-pqhw-3fhr
References
More Eclipse Foundation Cyclonedds vulnerabilities
- TI-2021-16045 Eclipse CycloneDDS Improper Handling of Syntactically Invalid Structure CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-38441 · CVE Program
- CVE-2021-38441 · NVD
- FIRST EPSS
- GHSA-9v3v-pqhw-3fhr · 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