Unauthenticated access via hard-coded JWT secret
Published Jun 25, 2025 · Updated Jul 17, 2025
Authentication bypass in MICROSENS NMP Web+ 3.2.5 and earlier allows remote attackers to forge JWTs and access protected functions. A hard-coded signing secret lets attackers create tokens that the server accepts as authentic; the responsible file or function is undisclosed. No credentials or user interaction are required, and exploitation grants unauthorized read and write access without interrupting service.
Summary
What happened
Authentication bypass in MICROSENS NMP Web+ 3.2.5 and earlier allows remote attackers to forge JWTs and access protected functions. A hard-coded signing secret lets attackers create tokens that the server accepts as authentic; the responsible file or function is undisclosed. No credentials or user interaction are required, and exploitation grants unauthorized read and write access without interrupting service.
The record
- CVE
- CVE-2025-49151
- Published
- Jun 25, 2025
- Updated
- Jul 17, 2025
- Vendor
- MICROSENS
- Product
- NMP Web+
- Classifications
- CWE-547, T1550.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 25, 2025CVE publishedPublication date reported by the CVE source.
- Jul 17, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=Version 3.2.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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