CVE-2021-22276

MEDIUMNVD 6.16.1—

6.1

The vulnerability allows a successful attacker to bypass the integrity check of FW uploaded to the free@home System Access Point.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 22.4%
KEV: Not listed

Published

September 23, 2021

Last Modified

November 21, 2024

References (2)

cybersecurity@chhttps://search.abb.com/library/Download.aspx?DocumentID=9AKK107992A6475&LanguageCode=en&DocumentPartId=&Action=Launch
af854a3a-2127-422b-91ae-364da2661108https://search.abb.com/library/Download.aspx?DocumentID=9AKK107992A6475&LanguageCode=en&DocumentPartId=&Action=Launch

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 8× 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
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 09:58 UTCEG score recompute
2026-05-26 09:58 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-22276?

CVE-2021-22276 is a medium vulnerability published on September 23, 2021. The vulnerability allows a successful attacker to bypass the integrity check of FW uploaded to the free@home System Access Point.

When was CVE-2021-22276 disclosed?

CVE-2021-22276 was first published in the National Vulnerability Database on September 23, 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-2021-22276 actively exploited?

CVE-2021-22276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-22276?

CVE-2021-22276 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2021-22276?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-22276, 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-2021-22276

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Is Your Infrastructure Affected by CVE-2021-22276?

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CVE-2021-22276

📅 Published

🔄 Last Modified

🔗 References (2)