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Vulnerability record · CVE-2021-20092 · published 29 April 2021

CVE-2021-20092: Buffalo wsr-2533dhpl2-bk firmware improper authentication vulnerability

Buffalo · Wsr 2533dhpl2 Bk Firmware

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.

7.5 CVSS 3.1 High EPSS 8.2% · top 5.3% CWE-287 · Improper authentication
7.5CVSS 3.1 base score, v2 5.0
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.tenable.com/security/research/tra-2021-13 Third Party Advisory
https://www.tenable.com/security/research/tra-2021-13 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-20090Buffalo router web interface path traversal allows auth bypassThe web interface of Buffalo WSR-2533DHPL2 (firmware <= 1.02) and WSR-2533DHP3 (firmware <= 1.24) is vulnerable to path traversal (CWE-22). An unauth…KEVEPSS 100%analysed8.8CVE-2021-20091Buffalo wsr-2533dhpl2-bk firmware vulnerabilityThe web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly sanitize user input. A…EPSS 8.8%7.5CVE-2026-42018JFrog Artifactory improper authentication leaks anonymous tokenJFrog Artifactory can return an internal anonymous-user token to an unauthenticated caller even when anonymous access is disabled. Because the token …KEVEPSS 9.8%analysed9.8CVE-2026-82329JFrog Artifactory improper authentication allows admin takeoverJFrog Artifactory contains an improper authentication weakness (CWE-287) that, under default configuration, may let an unauthenticated attacker with …KEVEPSS 14%analysed8.8CVE-2026-59822LiteLLM MCP endpoint auth bypass via OAuth2 passthrough fallbackLiteLLM's MCP Streamable HTTP endpoint, prior to 1.84.0, let an unauthenticated attacker send a fabricated Authorization header that triggered an OAu…KEVEPSS 0.84%analysed10.0CVE-2026-49869Kestra OSS auth bypass via path suffix match enables RCEKestra OSS AuthenticationFilter whitelists the public config endpoint using request.getPath().endsWith("/configs"), a suffix match instead of an exac…KEVEPSS 2.1%analysed9.8CVE-2023-49105ownCloud Server WebDAV authentication bypass via pre-signed URLsownCloud core before 10.13.1 accepts pre-signed URLs even when the file owner has no signing-key configured, so the signature check is effectively sk…KEVEPSS 43%analysed9.8CVE-2026-65400Apple macOS Screen Sharing authentication bypassAn improper authentication flaw in Apple macOS Screen Sharing allows a network attacker to authenticate without valid credentials. Apple fixed it via…KEVEPSS 1.2%analysed

Source: NIST National Vulnerability Database (record CVE-2021-20092), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.