CVE-2016-20009

CRITICALNVD 9.89.8—

9.8

A DNS client stack-based buffer overflow in ipdnsc_decode_name() affects Wind River VxWorks 6.5 through 7. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 61.9%
KEV: Not listed

Published

March 11, 2021

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://blog.exodusintel.com/2016/08/09/vxworks-execute-my-packets/
cve@mitrehttps://cert-portal.siemens.com/productcert/pdf/ssa-553445.pdf
af854a3a-2127-422b-91ae-364da2661108https://blog.exodusintel.com/2016/08/09/vxworks-execute-my-packets/
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-553445.pdf

Weakness Classification(1)

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

CWE-787Out-of-bounds Write

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 19:50 UTCEG score recompute
2026-05-26 19:50 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(5)

What is CVE-2016-20009?

CVE-2016-20009 is a critical vulnerability published on March 11, 2021. A DNS client stack-based buffer overflow in ipdnscdecodename() affects Wind River VxWorks 6.5 through 7. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

When was CVE-2016-20009 disclosed?

CVE-2016-20009 was first published in the National Vulnerability Database on March 11, 2021, 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-2016-20009 actively exploited?

CVE-2016-20009 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-20009?

CVE-2016-20009 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2016-20009?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-20009, 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-2016-20009

Explore →

Is Your Infrastructure Affected by CVE-2016-20009?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2016-20009

📅 Published

🔄 Last Modified

🔗 References (4)