Medium severity · published Dec 7, 2022
CVE-2022-34840
Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device
6.5
CVSS
0.3%
EPSS
No
On KEV
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
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HF
Hw-450hp-zwe Firmware · Buffalo
through 2.00 · source: NVD
WF
Wzr-300hp Firmware · Buffalo
through 2.00 · source: NVD
WF
Wzr-450hp Firmware · Buffalo
through 2.00 · source: NVD
WF
Wzr-450hp-cwt Firmware · Buffalo
through 2.00 · source: NVD
WF
Wzr-450hp-ub Firmware · Buffalo
through 2.00 · source: NVD
WF
Wzr-600dhp Firmware · Buffalo
through 2.00 · source: NVD
WF
Wzr-600dhp2 Firmware · Buffalo
through 1.15 · source: NVD
WF
Wzr-900dhp Firmware · Buffalo
through 1.15 · source: NVD
WF
Wzr-d1100h Firmware · Buffalo
through 2.00 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-34840
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-34840
Third Party Advisory
https://jvn.jp/en/vu/JVNVU92805279/index.html
Patch
https://www.buffalo.jp/news/detail/20221003-01.html
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