CVE-2026-18462: Integer Overflow or Wraparound, Improper Access Control vulnerability in RTI Connext Professional (Core Libraries) allows Shared Resource Manipulation.

Severity: high (CVSS 7.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-22 · updated 2026-09-22
Weakness: CWE-190

Description

Integer Overflow or Wraparound, Improper Access Control vulnerability in RTI Connext Professional (Core Libraries) allows Shared Resource Manipulation. 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.*.

Affected products

RTI Connext Professional: from 7.4.0 before 7.7.0.1; from 7.0.0 before 7.3.1.6; 6.1.x from 6.1.0 — fixed in 7.3.1.6, 7.7.0.1

How to fix

Upgrade to a fixed version: RTI Connext Professional 7.3.1.6, 7.7.0.1. Check the vendor advisory for mitigations.

References

https://www.rti.com/vulnerabilities/#cve-2026-18462

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