Name: CVE-2021-20090: Improper Limitation of a Pathname to a Restricted Directory
Creator: Rapid7
Published: 2021-04-29T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-20090, CWE-22, Exploited in the Wild, CISA KEV Exploit, CVSS 9.8, EPSS 0.99982, CISA KEV

A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Buffalo	—	Upgrade Buffalo firmware to the latest version	Jul 21, 2025	Aug 3, 2021

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CVSS Details

Covered by Rapid7

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