CVE-2026-18461 Other in Connext Professional

Critical 9.2 Published Updated

Format string injection in RTI Connext Professional core libraries allows attackers to execute code or cause denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-18461?

CVE-2026-18461 is a critical vulnerability in RTI Connext Professional, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Use of Externally-Controlled Format String vulnerability in RTI Connext Professional (Core Libraries) allows Format String Injection. This issue affects Connext Professional: from 7.5.0 before 7.7.0.1, from 7.3.0.10 before 7.3.1.6.

Weakness: CWE-134

Which versions are affected by CVE-2026-18461?

How do I fix CVE-2026-18461?

No fix has been published for CVE-2026-18461 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-18461 being exploited?

There is no known exploitation of CVE-2026-18461 in the wild and no public exploit code.

Sources

Also known as GHSA-hxc8-pv67-w823.

Is CVE-2026-18461 in your software?

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