CVE-2021-20090 · netVigilance record NV21-0196

Arcadyan Buffalo Firmware Path Traversal

past due

What to do

Apply updates per vendor instructions.

CISA deadline 2021-11-17 · passed 4 years 9 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

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.

Who is affected

Arcadyan Buffalo Firmware. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-22.

Timeline

2021-11-03
Added to CISA KEVExploitation in the wild confirmed by CISA
2021-11-17
CISA remediation deadlinepassed 4 years 9 months ago

Sources

NVD entry for CVE-2021-20090 nvd.nist.gov/vuln/detail/CVE-2021-20090
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-20090