CVE-2021-42851

MEDIUMNVD 6.35.3▼

6.3

A vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an unauthenticated user to create a standard user account.

CVSS v3: 6.3
EG Score: 5.3(medium)
EPSS: 58.3%
KEV: Not listed

Published

May 18, 2022

Last Modified

November 21, 2024

References (2)

psirt@lenovohttps://iknow.lenovo.com.cn/detail/dc_200017.html
af854a3a-2127-422b-91ae-364da2661108https://iknow.lenovo.com.cn/detail/dc_200017.html

Weakness Classification(1)

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

CWE-862Missing Authorization

Data Freshness Timeline

(refreshed 11× 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.

2026-06-04 13:10 UTCepss_batch
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Frequently asked(5)

What is CVE-2021-42851?

CVE-2021-42851 is a medium vulnerability published on May 18, 2022. A vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an unauthenticated user to create a standard user account.

When was CVE-2021-42851 disclosed?

CVE-2021-42851 was first published in the National Vulnerability Database on May 18, 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-2021-42851 actively exploited?

CVE-2021-42851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 58.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-42851?

CVE-2021-42851 has a CVSS v3 base score of 6.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.3.

How do I remediate CVE-2021-42851?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-42851, 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-2021-42851

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-42851?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)