CVE-2014-5637
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 Eu Sei (aka com.guilardi.eusei) application eusei_android_5.5 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
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 Eu Sei Android application (com.guilardi.eusei, version eusei_android_5.5) fails to validate X.509 certificates from SSL/TLS servers, allowing man-in-the-middle attackers to intercept encrypted communications by presenting fraudulent certificates and steal sensitive data.
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= eusei_android_5.5CVSS 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
- Adjacent
- Complexity
- M
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:A/AC:M/Au:N/C:P/I:P/A:P
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 the Eu Sei app is installedOn the Android device, go to Settings > Apps > Downloaded or All Apps, and search for 'Eu Sei' or 'Jogoeusei'. Alternatively, use ADB: adb shell pm list packages | grep euseiAffected if The package com.guilardi.eusei is present on the device
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Check the installed versionIn Settings > Apps > Eu Sei, view the Version information. Or use ADB: adb shell dumpsys package com.guilardi.eusei | grep versionNameAffected if The version matches eusei_android_5.5 exactly (version 5.5)
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Verify SSL/TLS is used by the appStart the app and observe network traffic using a proxy like Burp Suite or OWASP ZAP. Capture traffic while the app communicates with its backend server.Affected if The app transmits data over HTTPS/HTTP but the app is vulnerable to certificate validation flaws, meaning a proxy can intercept traffic without certificate errors on the client side
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Test for certificate validation bypassConfigure a man-in-the-middle proxy with an invalid or self-signed certificate. Attempt to intercept app traffic. Observe if the app accepts the fraudulent certificate and completes connections.Affected if The app accepts invalid certificates and completes connections without certificate validation errors, indicating the vulnerability is present
If the Eu Sei app (com.guilardi.eusei) version eusei_android_5.5 is installed and accepts invalid SSL/TLS certificates during MITM testing, the environment is affected by this CVE.
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 SSL/TLS certificate validation in the application, including certificate chain verification, hostname validation, and optionally certificate pinning to prevent MITM attacks.
- Consultation3.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-5637 — 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-2014-5637 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
- No weaponised exploit code, or anything meant to cause harm
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