dbcve.org
MobileqqApplication · Tencent

CVE-2011-4864

MEDIUM · 5.8 CVSS v2.0 Published 2012-01-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
67/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

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 · unedited
The Tencent MobileQQ (com.tencent.mobileqq) application 2.2 for Android does not properly protect data, which allows remote attackers to read or modify messages and a friends list via a crafted application.

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 confidence

The Tencent MobileQQ Android application 2.2 fails to properly protect sensitive user data, specifically messages and friends list information. This inadequate data protection allows any malicious application installed on the same Android device to read or modify this sensitive data through insecure storage mechanisms.

MitigationImplement proper data protection by using Android's encrypted storage APIs (e.g., EncryptedFile, KeyChain), secure shared preferences with encryption, and validate that sensitive data is not exposed through world-readable storage or insecure inter-app communication channels.

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
MobileqqApplication
Affected:= 2.2

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
M
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:P/I:P/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed MobileQQ version
    Open Android Settings > Apps > MobileQQ and look at the version number displayed, or use 'adb shell dumpsys package com.tencent.mobileqq' to query the package version
    Affected if The version shown is exactly 2.2
  2. Verify cross-application access capability
    Install a separate test application and attempt to read the contents of /data/data/com.tencent.mobileqq/ using standard Android file APIs
    Affected if A non-privileged app can successfully read or modify sensitive data stored by MobileQQ

A user is affected if MobileQQ version 2.2 is installed AND the app's data directory or stored files permit access by other applications on the same device.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper data protection by using Android's encrypted storage APIs (e.g., EncryptedFile, KeyChain), secure shared preferences with encryption, and validate that sensitive data is not exposed through world-readable storage or insecure inter-app communication channels.

Fix this in Mobileqq Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
25.0 hours of engineering $4,400
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2011-4864 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data