CVE-2026-40436
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 · uneditedThe ZTE ZXEDM iEMS product has a password reset vulnerability for any user.Because the management of the cloud EMS portal does not properly control access to the user list acquisition function, attackers can read all user list information through the user list interface. Attackers can reset the passwords of obtained user information, causing risks such as unauthorized operations.
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 · moderate confidenceThe ZTE ZXEDM iEMS cloud portal fails to properly enforce access controls on the user list API endpoint, allowing unauthenticated or unauthorized attackers to enumerate all user accounts. This information can then be used to reset passwords for any user, enabling full account takeover and unauthorized operations.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 16.25.42.04CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 the installed ZTE ZXEDM iEMS versionCheck the product version information in the system administration panel, about page, or by querying the system API for version metadata. This is typically found under Help > About or System > Status in the web portal interface.Affected if The installed version is exactly 16.25.42.04 (this specific version is affected)
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Locate the user list API endpointIdentify the API endpoint path used for user enumeration. This is typically at a path like /api/users, /api/user/list, or similar REST endpoint under the iEMS cloud portal user management module.Affected if The user list endpoint exists and is accessible within the iEMS portal configuration
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Test API access without authenticationSend an HTTP GET request to the user list API endpoint using a tool like curl or Burp Suite without including any session tokens, Authorization headers, or authentication cookies.Affected if The API responds with HTTP 200 and returns user account data (usernames, user IDs, email addresses) without requiring any credentials
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Verify password reset functionality exposureTest accessing the password reset or account recovery API endpoint without authentication, checking if it accepts arbitrary usernames or user IDs.Affected if The password reset endpoint processes requests without validating authenticated session or user privileges
You are affected if your ZTE ZXEDM iEMS version is exactly 16.25.42.04 AND the user list API endpoint responds with user data without requiring authentication credentials.
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 dataImplement proper authentication and role-based authorization checks on all user management APIs, particularly the user list and password reset endpoints. Require valid session tokens and verify user privileges before returning user information or processing password changes.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-40436 — 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-2026-40436 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
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- Version or environment caveats, and links to real fixes
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