critical9.8Known exploited
CVE-2021-20090
Arcadyan Buffalo Firmware Path Traversal Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2021-11-03. Federal due date: 2021-11-17.
Apply updates per vendor instructions.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Buffalo | Wsr-2533dhpl2-Bk Firmware | through 1.02 |
| Buffalo | Wsr-2533dhp3-Bk Firmware | through 1.24 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://www.kb.cert.org/vuls/id/914124
- https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/
- https://www.tenable.com/security/research/tra-2021-13
- https://www.kb.cert.org/vuls/id/914124
- https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/
- https://www.tenable.com/security/research/tra-2021-13
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20090