CVE-2026-2674 Memory corruption in Connext Professional

Medium 4.8 Published 17 Jun 2026 Updated 22 Sep 2026

An out-of-bounds write vulnerability in RTI Connext Professional allows attackers to cause 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-2026-2674?

CVE-2026-2674 is a medium-severity memory corruption vulnerability in RTI Connext Professional, published on 17 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Out-of-bounds Write vulnerability in RTI Connext Professional (Queueing Service,Core Libraries,Persistence Service) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.3, from 6.1.0 before 6.1.*.

Weakness: CWE-787

Which versions are affected by CVE-2026-2674?

It affects 1 product.

Products include Rti Connext Professional.

How do I fix CVE-2026-2674?

No fix has been published for CVE-2026-2674 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-2026-2674 being exploited?

There is no known exploitation of CVE-2026-2674 in the wild and no public exploit code.

Sources

Also known as GHSA-fjwx-wr6r-597j.