CVE-2022-34840
First published: Wed Dec 07 2022(Updated: )
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.
Credit: vultures@jpcert.or.jp
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Buffalo WZR-300HP firmware | <=2.00 | |
| Buffalo WZR-300HP firmware | ||
| Buffalo WZR-450HP | <=2.00 | |
| Buffalo WZR-450HP firmware | ||
| Buffalo WZR-600DHP firmware | <=2.00 | |
| BUFFALO wireless LAN routers | ||
| Buffalo WZR-900DHP firmware | <=1.15 | |
| Buffalo WZR-900DHP firmware | ||
| Buffalo HW-450HP-ZWE | <=2.00 | |
| Buffalo HW-450HP-ZWE firmware | ||
| Buffalo WZR-450HP | <=2.00 | |
| Buffalo WZR-450HP | ||
| Buffalo WZR-450HP firmware | <=2.00 | |
| Buffalo WZR-450HP-UB firmware | ||
| Buffalo WZR-600DHP2 firmware | <=1.15 | |
| Buffalo WZR-600DHP2 firmware | ||
| Buffalo WZR-D1100H | <=2.00 | |
| Buffalo WZR-D1100H firmware |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2022-34840?
CVE-2022-34840 is a vulnerability that allows a network-adjacent attacker to alter configuration settings of Buffalo network devices using hard-coded credentials.
Which Buffalo network devices are affected by CVE-2022-34840?
The following Buffalo network devices are affected: 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, WZR-D1100H firmware Ver. 2.00 and earlier.
What is the severity of CVE-2022-34840?
CVE-2022-34840 has a severity rating of 6.5 (Medium).
How can an attacker exploit CVE-2022-34840?
An attacker can exploit CVE-2022-34840 by using the hard-coded credentials to alter configuration settings of the vulnerable Buffalo network devices.
Is there a fix available for CVE-2022-34840?
Yes, Buffalo has released patches to address CVE-2022-34840. Users should update their firmware to the latest version provided by Buffalo.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/author
- agent/last-modified-date
- agent/severity
- agent/remedy
- agent/event
- agent/description
- agent/first-publish-date
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/buffalo
- canonical/buffalo wzr-300hp firmware
- version/buffalo wzr-300hp firmware/2.00
- canonical/buffalo wzr-450hp
- version/buffalo wzr-450hp/2.00
- canonical/buffalo wzr-450hp firmware
- canonical/buffalo wzr-600dhp firmware
- version/buffalo wzr-600dhp firmware/2.00
- canonical/buffalo wireless lan routers
- canonical/buffalo wzr-900dhp firmware
- version/buffalo wzr-900dhp firmware/1.15
- canonical/buffalo hw-450hp-zwe
- version/buffalo hw-450hp-zwe/2.00
- canonical/buffalo hw-450hp-zwe firmware
- version/buffalo wzr-450hp firmware/2.00
- canonical/buffalo wzr-450hp-ub firmware
- canonical/buffalo wzr-600dhp2 firmware
- version/buffalo wzr-600dhp2 firmware/1.15
- canonical/buffalo wzr-d1100h
- version/buffalo wzr-d1100h/2.00
- canonical/buffalo wzr-d1100h firmware