CVE-2025-61114
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 · unedited2nd Line Android App version v1.2.92 and before (package name com.mysecondline.app), developed by AutoBizLine, Inc., contains an improper access control vulnerability in its authentication mechanism. The server only validates the first character of the user_token, enabling attackers to brute force tokens and perform unauthorized queries on other user accounts. Successful exploitation could result in privacy breaches and unauthorized access to user data.
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 confidenceThe 2nd Line Android App's server-side authentication validates only the first character of the user_token, allowing attackers to brute force tokens by systematically testing character combinations. This enables unauthorized access to other user accounts and their data through the authentication mechanism.
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
- 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 if you run the 2nd Line server componentReview your infrastructure to determine if you host or operate a 2nd Line Android App server instance. Check for services handling user authentication for this application.Affected if You operate or host a 2nd Line server that handles authentication for the Android app.
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Determine your installed versionCheck the server application version through its about page, package metadata, or command line interface (e.g., --version, -v). Compare your version against any publicly released versions of the 2nd Line server software.Affected if Your version is older than the fixed version (if known) or you cannot confirm you have the fix.
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Review the token validation logicExamine the server-side authentication code that processes the user_token parameter. Specifically inspect how the token string is validated, whether it checks the full token or only a prefix (e.g., token[0] or similar substring logic).Affected if The code validates only the first character or a prefix of the token rather than the complete token string.
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Test authentication behaviorSend authentication requests with the same first character but different full tokens (e.g., token 'A123' vs 'A456'). Observe if both requests are accepted when only the first character matches a valid token.Affected if Authentication succeeds for different tokens that share only the same first character.
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Check for rate limiting on auth endpointsInspect your web server, API gateway, or application configuration for rate limiting rules on authentication endpoints (login, token validation). Look for request throttling or lockout configurations.Affected if No rate limiting or brute force protection exists on authentication endpoints.
You are affected if you operate a 2nd Line server where the token validation logic checks only the first character of user_token, allowing trivial brute force attacks.
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 dataFix the server-side token validation to properly validate the entire user_token string, implement rate limiting on authentication endpoints, and consider additional security measures like account lockout policies.
- Consultation3.0 h
- Implementation6.0 h
- Testing5.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-61114 — 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-2025-61114 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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