Password Hash Weakness in BUFFALO Wi-Fi Router WSR-1800AX4 Series
CVE-2025-46413

5.3MEDIUM

Key Information:

Vendor

Buffalo Inc.

Status
Wsr-1800ax4
Wsr-1800ax4s
Wsr-1800ax4b
Wsr-1800ax4-kh
Vendor
CVE Published:
7 November 2025

What is CVE-2025-46413?

A vulnerability has been identified in the BUFFALO Wi-Fi Router WSR-1800AX4 series, where the use of a password hash does not provide sufficient computational effort. This flaw can potentially allow attackers to retrieve the PIN code and/or Wi-Fi password when WPS is enabled. As a result, unauthorized users may gain access to the network, compromising the security of connected devices and sensitive information.

Affected Version(s)

WSR-1800AX4 prior to Ver.1.09

WSR-1800AX4-KH prior to Ver.1.19

WSR-1800AX4B prior to Ver.1.11

References

https://www.buffalo.jp/news/detail/20251107-01.html
https://jvn.jp/en/jp/JVN13754005/

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

CVSS V3.0

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-46413 : Password Hash Weakness in BUFFALO Wi-Fi Router WSR-1800AX4 Series