CVE-2021-38487

CRITICAL 9.1CVE-2021-38487 · Published 05/05/2022 · updated 17/06/2026

In short

CVE-2021-38487 is a CRITICAL (CVSS 9.1) vulnerability affecting connext dds micro (rti), connext professional (rti), connext secure (rti).
Chance of exploitation in the next 30 days (EPSS): 3.4%, higher than 88.8% of all vulnerabilities.
Fix: update to 6.1.0 or later.

Package	Affected versions	Patched versions
connext dds micro rti	`≥ 2.4`	No fix yet
connext professional rti	`≥ 4.2, < 6.1.0`	`6.1.0`
connext secure rti	`≥ 4.2, < 6.1.0`	`6.1.0`

Description

RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure.

References

support.rti.com/s/login · Permissions Required
cisa.gov/uscert/ics/advisories/icsa-21-315-02 · Third Party Advisory
rti.com/vulnerabilities

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free