CVE-2006-0266
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 · uneditedUnspecified vulnerability in the Query Optimizer component of Oracle Database server 9.0.1.5, 9.2.0.7, and 10.1.0.5 has unspecified impact and attack vectors, as identified by Oracle Vuln# DB19.
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 confidenceUnspecified vulnerability in the Oracle Database Query Optimizer component affecting versions 9.0.1.5, 9.2.0.7, and 10.1.0.5. The CVSS score of 9 indicates severe potential impact, though the exact attack vector and technical details are not specified in the Oracle advisory.
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= 9.0.1.5= 9.2.0.7= 10.1.0.5CVSS 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
- Network
- Complexity
- Low
- Authentication
- Single
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:S/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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Identify Oracle Database versionConnect to the database as a user with access to V$VERSION and run: SELECT * FROM V$VERSION; Look for the banner containing 'Oracle Database' and note the full version stringAffected if The version shown matches exactly 9.0.1.5, 9.2.0.7, or 10.1.0.5 (exact version match required per the = notation in the advisory)
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Confirm Query Optimizer component is in useThe Oracle Query Optimizer is a core component of the database that is active by default for query processing. No explicit enablement check is needed - it is always present and operational in affected versionsAffected if The database is running any of the affected versions, as the vulnerability exists in the Query Optimizer component itself regardless of configuration
A system is affected if the installed Oracle Database version is exactly 9.0.1.5, 9.2.0.7, or 10.1.0.5, as these specific point releases contain the vulnerability in the Query Optimizer component.
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 · scopedApply the relevant Oracle Critical Patch Update (CPU) for January 2006 or upgrade to a supported Oracle Database version that has incorporated the security fix for vulnerability DB19.
Oracle 11g or later (includes security fixes; note: 9i and 10g are now extended support)
- 1. Log in to Oracle Support (support.oracle.com) and search for Oracle Critical Patch Update January 2006
- 2. Locate the patch for Oracle Vuln# DB19 (Query Optimizer vulnerability)
- 3. Download the appropriate patch for your Oracle Database version (9.0.1.5, 9.2.0.7, or 10.1.0.5)
- 4. Back up your database before applying any patch
- 5. Apply the Critical Patch Update following Oracle's instructions in the CPU readme
- 6. Restart the Oracle database services as required by the patch
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2006-0266 — 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-2006-0266 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
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