CVE-2021-21953

HIGHNVD 8.18.1—

8.1

An authentication bypass vulnerability exists in the process_msg() function of the home_security binary of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted man-in-the-middle attack can lead to increased privileges.

CVSS v3: 8.1
EG Score: 8.1(medium)
EPSS: 53.8%
KEV: Not listed

Published

December 22, 2021

Last Modified

November 21, 2024

References (2)

talos-cna@ciscohttps://talosintelligence.com/vulnerability_reports/TALOS-2021-1380
af854a3a-2127-422b-91ae-364da2661108https://talosintelligence.com/vulnerability_reports/TALOS-2021-1380

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 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 05:55 UTCEG score recompute
2026-05-26 05:55 UTCGHSA enrichment
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-21953?

CVE-2021-21953 is a high vulnerability published on December 22, 2021. An authentication bypass vulnerability exists in the processmsg() function of the homesecurity binary of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted man-in-the-middle attack can lead to increased privileges.

When was CVE-2021-21953 disclosed?

CVE-2021-21953 was first published in the National Vulnerability Database on December 22, 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-2021-21953 actively exploited?

CVE-2021-21953 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-21953?

CVE-2021-21953 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2021-21953?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-21953, 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-2021-21953

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Is Your Infrastructure Affected by CVE-2021-21953?

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CVE-2021-21953

📅 Published

🔄 Last Modified

🔗 References (2)