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CVE Watch—

CVE-2021-20090

Arcadyan Buffalo Firmware Path Traversal Vulnerability

CVSS

—

No CVSS

EPSS

100.0%

p100

KEV

YES

Nov 3, 2021

Exploit Today

80

0-100

Published: — · Last modified: —

EPSS · 30d
100.0%EPSS · 30 days100.0%
2026-09-162026-10-14
KEV catalog record

Product

Arcadyan / Buffalo Firmware

Vulnerability

Arcadyan Buffalo Firmware Path Traversal Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

Nov 17, 2021

Known ransomware use

No

Summary description

Arcadyan Buffalo firmware contains a path traversal vulnerability that could allow unauthenticated, remote attackers to bypass authentication and access sensitive information. This vulnerability affects multiple routers across several different vendors.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-20090

Related CVEs

No related CVEs by CWE or product.