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CVE-2022-34840

Published: Dec 7, 2022Updated: Apr 23, 2025 Sources: CVE List NVDCWE-798
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.2%
Top 84.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-798

Affected Products

wzr-300hp firmwarebuffaloNetworking Infrastructure
wzr-450hp firmwarebuffaloNetworking Infrastructure
wzr-600dhp firmwarebuffaloNetworking Infrastructure
wzr-900dhp firmwarebuffaloNetworking Infrastructure
hw-450hp-zwe firmwarebuffaloNetworking Infrastructure
buffalocommercialTWNetworking Infrastructureaka wzr-600dhp firmware, wzr-1750dhp2 firmware, wzr-900dhp firmware
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Credential Access
Initial Access
View detailed technique mapping

References

https://jvn.jp/en/vu/JVNVU92805279/index.html
jvn.jp
https://www.buffalo.jp/news/detail/20221003-01.html
buffalo.jp

Timeline

Published
Dec 7, 2022
Last Updated
Apr 23, 2025

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