CVE-2021-38435 RTI Connext DDS Professional and Connext DDS Secure Incorrect Calculation of Buffer Size
Incorrect buffer size calculation in RTI Connext DDS allows attackers to trigger buffer overflows, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-38435?
CVE-2021-38435 is a medium-severity memory corruption vulnerability in RTI Connext DDS Professional, published on 5 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-131
Which versions are affected by CVE-2021-38435?
It affects 2 products.
Products include Rti Connext Professional, Rti Connext Secure.
How do I fix CVE-2021-38435?
No fix has been published for CVE-2021-38435 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-38435 being exploited?
There is no known exploitation of CVE-2021-38435 in the wild and no public exploit code.
Other vulnerabilities in RTI Connext DDS Professional
- CVE-2026-2467 Memory corruption in Connext Professional
- CVE-2026-3894 Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers.
- CVE-2024-52057 SQL injection in Connext Professional
- CVE-2026-7300 Memory corruption in Connext Professional
- CVE-2025-14543 XML external entity in Connext Professional
Sources
Also known as GHSA-wvww-www9-c7jj.