CVE-2021-38427
mediumpriority · track · 31EPSS 0.006 · 48 %ileEUUSEPSS · scored 2026-10-27
RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
No vendor fix yet; a mitigation is available.
- MitigationEclipse CycloneDDScisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download - MitigationGurumNetworks GurumDDScisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download - MitigationObject Computing Inc. (OCI) OpenDDScisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download - MitigationRTI Connext DDS Microcisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download - MitigationReal-Time Innovations (RTI) Connext DDS Professional and Connext DDS Securecisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download - MitigationTwinOaks Computing CoreDX DDScisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download - MitigationeProsima Fast DDScisa_csaf_ot
Twin Oaks Computing recommends users apply CoreDX DDS Version 5.9.1 or later, which can be downloaded on the Twin Oaks website (login required).
http://www.twinoakscomputing.com/coredx/download
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (18)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-21-315-02Multiple Data Distribution Service (DDS) Implementations (Update A)2021-11-11icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could result in denial-of-service or buffer-overflow conditions, which may lead to remote code execution or information exposure.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2021-38427/cnnvd
- https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2Fcnnvd
- https://us-cert.cisa.gov/ics/advisories/icsa-21-315-02cnnvd
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02cnnvd
- https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2Fenisa_euvd
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02enisa_euvd
- https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2FPermissions RequiredVendor Advisorynvd
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02Third Party AdvisoryUS Government Resourcenvd
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