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TI-2021-16087 Aliases CVE-2021-38487GHSA-vhvr-hgg7-6xqj

Potential Network Amplification and Information Exposure in RTI Connext Professional and Connext Micro

Priority MEDIUM 50CWE-406Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03383 88th percentileScored 2026-11-07
Fix Fixed Connext Professional (RTI): 6.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RTIConnext Professional4.1 to before 6.1.06.1.0Patch availableCNA
RTIConnext Micro4.0.0 and later; 3.0.0 and later; 2.4.0 and later—No fix listedCNA
  • Connext Professional VendorRTI Affected 4.1 to before 6.1.0 Fixed in 6.1.0 Patch available CNA
  • Connext Micro VendorRTI Affected 4.0.0 and later; 3.0.0 and later; 2.4.0 and later Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:rti:connext_dds_micro:*:*:*:*:*:*:*:*2.4VulnerableRTI
cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*4.2 to before 6.1.0VulnerableRTI
cpe:2.3:a:rti:connext_secure:*:*:*:*:*:*:*:*4.2 to before 6.1.0VulnerableRTI
  • cpe:2.3:a:rti:connext_dds_micro:*:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·RTI
  • cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:* Versions 4.2 to before 6.1.0 Vulnerable ·RTI
  • cpe:2.3:a:rti:connext_secure:*:*:*:*:*:*:*:* Versions 4.2 to before 6.1.0 Vulnerable ·RTI

Remediation

  • Fix · CNA Connext Professional (RTI) Fixed in 6.1.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38487
  2. 2026-10-03 Alias added: GHSA-vhvr-hgg7-6xqj

References

Advisory 2

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences