CVE-2021-20092

HIGHNVD 7.57.5—Elevated

7.5

The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly restrict access to sensitive information from an unauthorized actor.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 98.6%
KEV: Not listed

Published

April 29, 2021

Last Modified

November 21, 2024

References (2)

vulnreport@tenablehttps://www.tenable.com/security/research/tra-2021-13
af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/research/tra-2021-13

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 19× 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 22:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-24 16:49 UTCepss_batch
2026-05-23 08:08 UTCEG score recompute
2026-05-23 08:08 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2021/CVE-2021-20092.yaml
First seen Jan 1, 2021
Buffalo WSR-2533DHPL2 - Improper Access Control
Open source ↗

Frequently asked(5)

What is CVE-2021-20092?

CVE-2021-20092 is a high vulnerability published on April 29, 2021. The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly restrict access to sensitive information from an unauthorized actor.

When was CVE-2021-20092 disclosed?

CVE-2021-20092 was first published in the National Vulnerability Database on April 29, 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-2021-20092 actively exploited?

CVE-2021-20092 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-20092?

CVE-2021-20092 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-20092?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-20092, 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-2021-20092

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-20092?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)