CVE-2026-21381

HIGHNVD 7.67.6—

7.6

Transient DOS when receiving a service data frame with excessive length during device matching over a neighborhood awareness network protocol connection.

CVSS v3: 7.6
EG Score: 7.6(medium)
EPSS: 10.2%
KEV: Not listed

Published

April 6, 2026

Last Modified

April 8, 2026

References (1)

product-security@qualcommhttps://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html

Weakness Classification(1)

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

CWE-126Buffer Over-read

Data Freshness Timeline

(refreshed 18× 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.

2026-05-31 22:30 UTCepss_batch
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2026-05-21 22:43 UTCepss_batch

Frequently asked(5)

What is CVE-2026-21381?

CVE-2026-21381 is a high vulnerability published on April 6, 2026. Transient DOS when receiving a service data frame with excessive length during device matching over a neighborhood awareness network protocol connection.

When was CVE-2026-21381 disclosed?

CVE-2026-21381 was first published in the National Vulnerability Database on April 6, 2026, with the most recent update on April 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-21381 actively exploited?

CVE-2026-21381 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-21381?

CVE-2026-21381 has a CVSS v3 base score of 7.6 (NVD).

How do I remediate CVE-2026-21381?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21381, 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-2026-21381

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-21381?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)