vulnerability
Buffalo WSR-2533DHP3: CVE-2021-20090: Path Traversal
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Aug 3, 2021 | Jul 21, 2025 | Aug 8, 2025 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Aug 3, 2021
Added
Jul 21, 2025
Modified
Aug 8, 2025
Description
A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version less than or equal to 1.02 and WSR-2533DHP3 firmware version less than or equal to 1.24 could allow unauthenticated remote attackers to bypass authentication.
Solution
buffalo-upgrade-latest
References
- CVE-2021-20090
- https://attackerkb.com/topics/CVE-2021-20090
- URL-https://www.tenable.com/security/research/tra-2021-13
- URL-https://medium.com/tenable-techblog/bypassing-authentication-on-arcadyan-routers-with-cve-2021-20090-and-rooting-some-buffalo-ea1dd30980c2
- URL-https://nvd.nist.gov/vuln/detail/CVE-2021-20090
- URL-https://www.kb.cert.org/vuls/id/914124
- URL-https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/
- CWE-22
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