CVE-2026-11389 Memory corruption in Connext Professional
An out-of-bounds read and type confusion vulnerability in RTI Connext Professional core libraries allows attackers to overread buffers, potentially leading to information disclosure or crashes.
- 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-2026-11389?
CVE-2026-11389 is a medium-severity memory corruption vulnerability in RTI Connext Professional, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Out-of-bounds Read, Function Call With Incorrect Number of Arguments, Access of Resource Using Incompatible Type ('Type Confusion') vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.3.0 before 7.3.1.6.
Which versions are affected by CVE-2026-11389?
How do I fix CVE-2026-11389?
No fix has been published for CVE-2026-11389 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-2026-11389 being exploited?
There is no known exploitation of CVE-2026-11389 in the wild and no public exploit code.
Sources
Also known as GHSA-v63h-ppxr-x489.