CVE-2022-21742

MEDIUMNVD 6.26.2—

6.2

Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.

CVSS v3: 6.2
EG Score: 6.2(medium)
EPSS: 33.7%
KEV: Not listed

Published

June 20, 2022

Last Modified

November 21, 2024

References (2)

twcert@certhttps://www.twcert.org.tw/tw/cp-132-6057-1cd0d-1.html
af854a3a-2127-422b-91ae-364da2661108https://www.twcert.org.tw/tw/cp-132-6057-1cd0d-1.html

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 14× 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.

2026-06-05 06:09 UTCepss_batch
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Frequently asked(5)

What is CVE-2022-21742?

CVE-2022-21742 is a medium vulnerability published on June 20, 2022. Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.

When was CVE-2022-21742 disclosed?

CVE-2022-21742 was first published in the National Vulnerability Database on June 20, 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-2022-21742 actively exploited?

CVE-2022-21742 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-21742?

CVE-2022-21742 has a CVSS v3 base score of 6.2 (NVD).

How do I remediate CVE-2022-21742?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-21742, 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-2022-21742

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-21742?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)