Authenticated admin password reset via code parameter
Published Jul 20, 2025 · Updated Jul 21, 2025
Weak password recovery in MERCUSYS MW301R 1.0.2 Build 190726 Rel.59423n allows remote authenticated users to reset the admin password. The web interface accepts code=5 in an intercepted authenticated request and routes the session directly to the create-password form without verifying the current password. A valid administrator session and network access to the management interface are required; exploitation replaces the administrator credential.
Summary
What happened
Weak password recovery in MERCUSYS MW301R 1.0.2 Build 190726 Rel.59423n allows remote authenticated users to reset the admin password. The web interface accepts code=5 in an intercepted authenticated request and routes the session directly to the create-password form without verifying the current password. A valid administrator session and network access to the management interface are required; exploitation replaces the administrator credential.
The record
- CVE
- CVE-2025-7881
- Published
- Jul 20, 2025
- Updated
- Jul 21, 2025
- Vendor
- MERCUSYS
- Product
- MW301R
- Classifications
- CWE-640, T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 20, 2025CVE publishedPublication date reported by the CVE source.
- Jul 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.0.2 Build 190726 Rel.59423n
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- MW301R authenticated password-reset proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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