# CVE-2021-38487

## Summary

- **CVE ID:** CVE-2021-38487
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-406, CWE-923
- **Published:** May 5, 2022
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- RTI — Connext Professional (4.1)
- RTI — Connext Micro (4.0.0)
- RTI — Connext Micro (3.0.0)
- RTI — Connext Micro (2.4.0)

## References

- [CNA](https://www.rti.com/vulnerabilities/#cve-2021-38487)
- [CNA](https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02)
- [CNA](https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.10%
- **EPSS Percentile:** 28.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._