CVE-2021-20090: Arcadyan Buffalo Firmware Path Traversal Vulnerability
Critical · CVSS 9.8 (CVSS 3.1)KEV known exploitedEPSS 100.0%, 100th percentilePublished Updated Assigner: tenable
In CISA’s Known Exploited Vulnerabilities catalog: Arcadyan Buffalo Firmware Path Traversal Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
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.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- www.kb.cert.org/vuls/id/914124 (opens in new tab)
- www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/ (opens in new tab)
- www.tenable.com/security/research/tra-2021-13 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)