CVE-2021-38429

MEDIUMNVD 6.69.1▲

6.6

OCI OpenDDS versions prior to 3.18.1 are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic, which may result in a denial-of-service condition and information exposure.

CVSS v3: 6.6
EG Score: 9.1(medium)
EPSS: 18.9%
KEV: Not listed

Published

May 5, 2022

Last Modified

November 21, 2024

References (4)

ics-cert@hqhttps://opendds.org/
ics-cert@hqhttps://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02
af854a3a-2127-422b-91ae-364da2661108https://opendds.org/
af854a3a-2127-422b-91ae-364da2661108https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-406

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 22:45 UTCEG score recompute

Frequently asked(5)

What is CVE-2021-38429?

CVE-2021-38429 is a medium vulnerability published on May 5, 2022. OCI OpenDDS versions prior to 3.18.1 are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic, which may result in a denial-of-service condition and information exposure.

When was CVE-2021-38429 disclosed?

CVE-2021-38429 was first published in the National Vulnerability Database on May 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-38429 actively exploited?

CVE-2021-38429 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-38429?

CVE-2021-38429 has a CVSS v3 base score of 6.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.1.

How do I remediate CVE-2021-38429?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-38429, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-38429

📅 Published

🔄 Last Modified

🔗 References (4)