CVE-2022-34840
6.5 · MEDIUMOverview
CVE-2022-34840 is a medium-severity vulnerability affecting buffalo wzr-300hp_firmware. It was published on December 7, 2022 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: 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, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.
Remediation
Check the references section for vendor advisories and patches from buffalo. Update wzr-300hp_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 | wzr-300hp_firmware | 0 | Affected |
| buffalo | wzr-450hp_firmware | 0 | Affected |
| buffalo | wzr-600dhp_firmware | 0 | Affected |
| buffalo | wzr-900dhp_firmware | 0 | Affected |
| buffalo | hw-450hp-zwe_firmware | 0 | Affected |
| buffalo | wzr-450hp-cwt_firmware | 0 | Affected |
| buffalo | wzr-450hp-ub_firmware | 0 | Affected |
| buffalo | wzr-600dhp2_firmware | 0 | Affected |
| buffalo | wzr-d1100h_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2022-34840?
CVE-2022-34840 is a medium-severity vulnerability affecting buffalo wzr-300hp_firmware. It was published on December 7, 2022 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2022-34840?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. 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-2022-34840?
Check the references section for vendor advisories and patches from buffalo. Update wzr-300hp_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-2022-34840?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-34840 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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