CVE-2022-40966
8.8 · HIGHOverview
CVE-2022-40966 is a high-severity vulnerability affecting buffalo wcr-300_firmware. It was published on December 7, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Authentication bypass vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to bypass authentication and access the device. The affected products/versions are as follows: WCR-300 firmware Ver. 1.87 and earlier, WHR-HP-G300N firmware Ver. 2.00 and earlier, WHR-HP-GN firmware Ver. 1.87 and earlier, WPL-05G300 firmware Ver. 1.88 and earlier, WRM-D2133HP firmware Ver. 2.85 and earlier, WRM-D2133HS firmware Ver. 2.96 and earlier, WTR-M2133HP firmware Ver. 2.85 and earlier, WTR-M2133HS firmware Ver. 2.96 and earlier, WXR-1900DHP firmware Ver. 2.50 and earlier, WXR-1900DHP2 firmware Ver. 2.59 and earlier, WXR-1900DHP3 firmware Ver. 2.63 and earlier, WXR-5950AX12 firmware Ver. 3.40 and earlier, WXR-6000AX12B firmware Ver. 3.40 and earlier, WXR-6000AX12S firmware Ver. 3.40 and earlier, WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, WZR-1750DHP
Remediation
Check the references section for vendor advisories and patches from buffalo. Update wcr-300_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| buffalo | wcr-300_firmware | 0 | Affected |
| buffalo | whr-hp-g300n_firmware | 0 | Affected |
| buffalo | whr-hp-gn_firmware | 0 | Affected |
| buffalo | wpl-05g300_firmware | 0 | Affected |
| buffalo | wrm-d2133hp_firmware | 0 | Affected |
| buffalo | wrm-d2133hs_firmware | 0 | Affected |
| buffalo | wtr-m2133hp_firmware | 0 | Affected |
| buffalo | wtr-m2133hs_firmware | 0 | Affected |
| buffalo | wxr-1900dhp_firmware | 0 | Affected |
| buffalo | wxr-1900dhp2_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2022-40966?
CVE-2022-40966 is a high-severity vulnerability affecting buffalo wcr-300_firmware. It was published on December 7, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2022-40966?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-40966?
Check the references section for vendor advisories and patches from buffalo. Update wcr-300_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2022-40966?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-40966 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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