CVE-2022-34840 Hardcoded credentials in Buffalo network devices
A network-adjacent attacker can use hard-coded credentials to alter configuration settings on multiple Buffalo network devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-34840?
CVE-2022-34840 is a medium-severity vulnerability in Buffalo network devices, published on 7 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-798
Which versions are affected by CVE-2022-34840?
It affects 9 products.
Products include Buffalo Hw-450hp-Zwe Firmware, Buffalo Wzr-300hp Firmware, Buffalo Wzr-450hp-Cwt Firmware, Buffalo Wzr-450hp-Ub Firmware, Buffalo Wzr-450hp Firmware, Buffalo Wzr-600dhp2 Firmware and 3 more.
How do I fix CVE-2022-34840?
No fix has been published for CVE-2022-34840 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-34840 being exploited?
There is no known exploitation of CVE-2022-34840 in the wild and no public exploit code.
Sources
Also known as GHSA-pgrg-rvjm-c6vq.