CVE-2021-20090
CriticalActively exploited (CISA KEV)
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductArcadyan Buffalo Firmware
PublishedApr 29, 2021
First seenApr 29, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-22Path traversal
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| buffalo wsr-2533dhpl2-bk_firmware | v ≤ 1.02 | — |
| buffalo wsr-2533dhp3-bk_firmware | v ≤ 1.24 | — |
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