Improper validation of sequence numbers leading to remotely reachable assertion failure
Priority HIGH 72CWE-617Published · 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
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-617.
Summary
eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01038 64th percentileScored 2026-11-07
Fix Fixed Fast-DDS (eProsima): 2.9.1, 2.6.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| eProsima | Fast-DDS | 2.7.0 to before 2.9.1; before 2.6.5 | 2.9.1, 2.6.5 | Patch available | CNA |
- Fast-DDS VendoreProsima Affected 2.7.0 to before 2.9.1; before 2.6.5 Fixed in 2.9.1, 2.6.5 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:* | 2.6.0 to before 2.6.5 | Vulnerable | eProsima |
| cpe:2.3:a:eprosima:fast_dds:2.9.0:*:*:*:*:*:*:* | 2.9.0 | Vulnerable | eProsima |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Debian |
- cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:* Versions 2.6.0 to before 2.6.5 Vulnerable ·eProsima
- cpe:2.3:a:eprosima:fast_dds:2.9.0:*:*:*:*:*:*:* Versions 2.9.0 Vulnerable ·eProsima
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Debian
Remediation
- Fix · CNA Fast-DDS (eProsima) Fixed in 2.9.1, 2.6.5
Timeline
- 2026-10-02 Threatist record created from CVE-2023-39949
References
More eProsima Fast Dds vulnerabilities
- TI-2025-38815 Integer overflow in eProsima Fast-DDS CVSS 3.1HIGH 8.6
- TI-2024-18790 Manipulated DATA Submessage causes a heap-buffer-overflow error CVSS 3.1CRITICAL 9.7
- TI-2023-27485 Disconnect Vulnerability in RTPS Packets Used by SROS2 CVSS 3.1CRITICAL 9.7
- TI-2024-20005 FastDDS heap buffer overflow when publisher sends malformed packet CVSS 3.1HIGH 8.2
- TI-2023-20840 Another heap overflow in push_back_helper CVSS 3.1HIGH 8.2
- TI-2023-20839 Heap overflow in push_back_helper due to a CDR message CVSS 3.1HIGH 8.2
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences