CVE-2026-30803: Rti Connext Micro

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers. This issue affects Connext Micro: from 4.0.0 before 4.3.0.

Affected products

• Rti Connext Micro: from 4.0.0, before 4.3.0 (fixed in 4.3.0)

Published 2026-06-17. Last modified 2026-09-22.