CVE-2021-20090 — Arcadyan Buffalo Firmware Path Traversal Vulnerability

provenance: imported · CVE: CVE-2021-20090 · CWE: CWE-22

CVE-2021-20090: Arcadyan Buffalo Firmware Path Traversal Vulnerability

CISA Known Exploited Vulnerability (KEV)


Vendor / project	Arcadyan
Product	Buffalo Firmware
Date added	2021-11-03
Due date	2021-11-17
Ransomware campaign use	Unknown

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 (CISA)

Apply updates per vendor instructions.

Notes

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

Weakness behind it

CISA records this vulnerability as an instance of CWE-22. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20090
KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

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