CVE-2019-25237
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedV-SOL GPON/EPON OLT Platform v2.03 contains a privilege escalation vulnerability that allows normal users to gain administrative access by manipulating the user role parameter. Attackers can send a crafted HTTP POST request to the user management endpoint with 'user_role_mod' set to integer value '1' to elevate their privileges.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceV-SOL GPON/EPON OLT Platform v2.03 contains a privilege escalation vulnerability where normal authenticated users can elevate to administrative privileges by sending a crafted HTTP POST request to the user management endpoint with the 'user_role_mod' parameter set to integer value '1', bypassing server-side authorization checks.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify V-SOL GPON/EPON OLT Platform versionAccess the device web interface or check system info pages to confirm the exact firmware/software version is v2.03Affected if The installed version is v2.03 of V-SOL GPON/EPON OLT Platform
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Verify user management endpoint existsCheck if the web interface exposes a user management page or endpoint (typically at paths like /user_mgmt, /userManagement, or similar admin-related paths)Affected if The user management endpoint is accessible without additional authentication beyond normal user login
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Test for missing authorization on role modificationAs a normal (non-admin) authenticated user, attempt to send an HTTP POST request to the user management endpoint with the parameter user_role_mod=1 and observe if the request is accepted without proper admin authorization checksAffected if The system accepts role modification requests from non-admin authenticated users without proper server-side authorization validation
A user is affected if they are running V-SOL GPON/EPON OLT Platform v2.03 and the system allows normal authenticated users to modify user roles to admin without elevated authorization checks
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor patch or update to v2.03 or later if available. Until patch is available, implement server-side authorization validation to reject user role modification requests from non-admin users, and consider network segmentation to limit exposure.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-25237 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2019-25237 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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