CVE-2009-3046
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 10.00 does not check all intermediate X.509 certificates for revocation, which makes it easier for remote SSL servers to bypass validation of the certificate chain via a revoked 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 · moderate confidenceOpera versions prior to 10.00 failed to perform revocation checks on intermediate X.509 certificates within SSL certificate chains, allowing the browser to trust chains containing revoked intermediate CA certificates. This enables man-in-the-middle attacks where a compromised intermediate CA could issue fraudulent certificates that Opera would accept as valid.
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< 10.00CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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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Check if Opera Browser is installedSearch for Opera executable on the system. Common locations: Windows: C:\Program Files\Opera\opera.exe or C:\Program Files (x86)\Opera\opera.exe; Linux: /usr/bin/opera or /usr/local/bin/opera; macOS: /Applications/Opera.appAffected if Opera Browser executable exists on the system
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Determine the installed Opera versionRun 'opera --version' from command line, or right-click opera.exe and select Properties > Details to view File Version, or check Help > About Opera within the browser interfaceAffected if Version number returned is lower than 10.00
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Verify SSL certificate chain validation behaviorThis vulnerability is inherent to the version itself - no specific config to check. The flaw exists in how Opera < 10.00 processes intermediate CA certificate revocation during SSL handshake validationAffected if Opera version is below 10.00 and the browser is used for HTTPS connections to sites with certificate chains using revoked intermediate CAs
If Opera Browser is installed with a version number less than 10.00, the environment is affected by this CVE and the browser will accept SSL connections with revoked intermediate CA certificates.
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 data10.00
Upgrade Opera to version 10.00 or later, which implements proper revocation checking for all certificates in the trust chain including intermediate CAs.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2009-3046 — 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-2009-3046 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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