How severe is CVE-2021-38487?

CVE-2021-38487 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2021-38487 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38487?

CVE-2021-38487 primarily affects Rti Connext Dds Micro. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-38487?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-38487 published?

CVE-2021-38487 was published on 2022-05-05 and last updated on 2026-06-17.

CVE-2021-38487

CVE-2021-38487 is a high-severity vulnerability in Rti Connext Dds Micro with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-406.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 6.4
CVSS v4: 8.8
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-406
Affected product: Rti Connext Dds Micro
Published: 2022-05-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-38487?: 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.
How severe is CVE-2021-38487?: CVE-2021-38487 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2021-38487 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38487?: CVE-2021-38487 primarily affects Rti Connext Dds Micro. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-38487?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-38487 published?: CVE-2021-38487 was published on 2022-05-05 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:rti:connext_dds_micro:*:*:*:*:*:*:*:*
cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*
cpe:2.3:a:rti:connext_secure:*:*:*:*:*:*:*:*

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