CVE-2010-4587
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 · uneditedOpera before 11.00 on Windows does not properly implement the Insecure Third Party Module warning message, which might make it easier for user-assisted remote attackers to have an unspecified impact via a crafted module.
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 confidenceOpera before 11.00 on Windows fails to properly implement the Insecure Third Party Module warning mechanism. This allows user-assisted remote attackers to exploit crafted malicious third-party modules with an unspecified impact, as the intended security warning that should alert users to dangerous modules does not function correctly.
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<= 11.00= 5.0= 5.02= 5.10= 5.11= 5.12= 6.0= 6.1= 6.01= 6.02= 6.03= 6.04CVSS 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
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/Au:N/C:C/I:C/A:C
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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Check if Opera is installed on the Windows systemLook for Opera executable in common installation directories: C:\Program Files\Opera\opera.exe or C:\Program Files (x86)\Opera\opera.exe. Also check the Windows registry under HKLM\SOFTWARE\Opera Software or HKCU\SOFTWARE\Opera Software for the installed path.Affected if Opera browser is found installed on the system
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Determine the installed Opera version numberRight-click on the opera.exe file, select Properties, then go to the Details tab to view the File Version. Alternatively, open Opera and navigate to Help > About Opera to see the version number displayed.Affected if The reported version is 11.00 or lower, or matches one of the specific affected versions: 5.0, 5.02, 5.10, 5.11, 5.12, 6.0, 6.1, 6.01, 6.02, 6.03, or 6.04
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Confirm the operating system is WindowsVerify the affected system is running Microsoft Windows, as this vulnerability specifically affects Opera on the Windows platform.Affected if The system runs any Windows version and has an affected Opera version installed
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Check for presence of third-party Opera modules or extensionsExamine the Opera program directory for any non-standard DLL files or modules in the installation folder, or check for third-party extensions in the Opera profile directory under %APPDATA%\Opera\Opera\.Affected if Third-party modules are loaded in an Opera version 11.00 or lower on Windows, which would trigger the faulty warning mechanism
A system is affected if it runs Opera browser version 11.00 or lower on Windows and loads third-party modules, as the security warning mechanism fails to properly alert users to potentially malicious modules.
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.
dbcve · scopedUpgrade Opera to version 11.00 or later on all affected Windows systems, or migrate to a supported browser alternative.
Opera 11.00 or later (note: Opera has since released many newer versions; consider upgrading to the latest stable Opera release for comprehensive security)
- Download Opera 11.00 or later from the official Opera website (www.opera.com)
- Close all running instances of the Opera browser
- Install the downloaded Opera 11.00 or newer version
- Restart Opera and verify the version by navigating to Help > About Opera
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2010-4587 — 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-2010-4587 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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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.
- 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