CVE-2021-38441

MEDIUMNVD 6.69.8▲

6.6

Eclipse CycloneDDS versions prior to 0.8.0 are vulnerable to a write-what-where condition, which may allow an attacker to write arbitrary values in the XML parser.

CVSS v3: 6.6
EG Score: 9.8(medium)
EPSS: 36.6%
KEV: Not listed

Published

May 5, 2022

Last Modified

November 21, 2024

References (4)

ics-cert@hqhttps://projects.eclipse.org/projects/iot.cyclonedds
ics-cert@hqhttps://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02
af854a3a-2127-422b-91ae-364da2661108https://projects.eclipse.org/projects/iot.cyclonedds
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-123Write-what-where Condition

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

2026-05-27 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
2026-05-25 22:45 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-38441?

CVE-2021-38441 is a medium vulnerability published on May 5, 2022. Eclipse CycloneDDS versions prior to 0.8.0 are vulnerable to a write-what-where condition, which may allow an attacker to write arbitrary values in the XML parser.

When was CVE-2021-38441 disclosed?

CVE-2021-38441 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-2021-38441 actively exploited?

CVE-2021-38441 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-38441?

CVE-2021-38441 has a CVSS v3 base score of 6.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.

How do I remediate CVE-2021-38441?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-38441, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-38441

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CVE-2021-38441

📅 Published

🔄 Last Modified

🔗 References (4)