CVE-2026-18459: Rti Connext Professional

High severity, CVSS 8.7. EPSS: 0.3% chance of exploitation in the next 30 days.

Incorrect Calculation vulnerability in RTI Connext Professional (Core Libraries) allows Abuse Existing Functionality. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.0 before 5.2.*, from 4.1x before 5.1.*.

Affected products

• Rti Connext Professional: from 7.4.0, before 7.7.0.1 (fixed in 7.7.0.1); from 7.0.0, before 7.3.1.6 (fixed in 7.3.1.6); from 6.1.0, before 6.2 (fixed in 6.2); from 6.0.0, before 6.1 (fixed in 6.1); from 5.3.0, before 5.4 (fixed in 5.4); from 5.2.0, before 5.3 (fixed in 5.3); …

Published 2026-09-22. Last modified 2026-09-22.