9.8
Critical
CVE-2021-20090 Arcadyan Buffalo Firmware Path Traversal Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Not observed so far
Weakness
CWE-22
Description
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 and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3 | Versions not published |