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01 Record

CVE-2022-40966

Authentication bypass vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to bypass authentication and access the device. The affected products/versions are as

HighPUBLISHEDCNA: jpcert
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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02 Description

Authentication bypass vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to bypass authentication and access the device. The affected products/versions are as

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 28.4% of scored records. A rank, not a probability.
NVD base score
8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-12-07 00:00Z3 YR AGO
Last updated
2025-04-23 16:06Z1 YR AGO
Reserved
2022-09-27
Assigning CNA
jpcert
Record state
PUBLISHED
Severity
High (CVSS 8.8)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-287Improper AuthenticationClass
Data version
5.1
Document digest
82e9ee24c961d04fe15d36bda444fce147c5b3fa8d6d4cc22b78663119264705

05 Affected products

VendorProductVersionsPlatforms
BUFFALO INC.Buffalo network devicesA wide range of products is affected. For the specific products/versions information, see the URLs provided by the vendor and JVN which are listed in [Reference] section.—

06 References