CVE-2021-38435
CRITICALCVSS 9.8/10EPSS 1.35%
Last modified
CVE-2021-38435 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.. EPSS estimates a 1.35% chance of exploitation in the next 30 days.
Description
RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Rti | Connext Professional | >= 4.2, < 6.1.0 |
| Rti | Connext Secure | >= 4.2, < 6.1.0 |
References
- https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2FPermissions Required, Vendor Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02Third Party Advisory, US Government Resource
- https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2FPermissions Required, Vendor Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38435?
RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.
How severe is CVE-2021-38435?
CVE-2021-38435 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38435?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-38435?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST