CVE-2003-1388
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 · uneditedBuffer overflow in Opera 7.02 Build 2668 allows remote attackers to crash Opera via a long HTTP request ending in a .ZIP extension.
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 confidenceA buffer overflow vulnerability exists in Opera 7.02 Build 2668 where a remote attacker can crash the browser by sending a long HTTP request ending in a .ZIP extension. This is a denial-of-service vulnerability stemming from improper bounds checking when handling HTTP responses with .ZIP file extension headers.
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= 7.02CVSS 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 browser is installedLook for Opera executable in common installation directories (e.g., C:\Program Files\Opera on Windows, /Applications on macOS, or /usr/bin/opera on Linux) or search for 'opera' in system program listingsAffected if Opera browser is found on the system
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Determine the installed Opera versionLaunch Opera and navigate to Help > About Opera, or right-click the Opera executable and select Properties > Version, or run 'opera --version' from command line if availableAffected if The displayed version shows 7.02 Build 2668 specifically
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Verify the exact build numberIn the About Opera dialog, look for the Build number or revision information to confirm it matches Build 2668Affected if The build number is exactly 2668, matching the vulnerable build
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Confirm the vulnerability trigger conditionThis vulnerability is triggered by receiving a long HTTP response with a .ZIP file extension in the headers. The flaw requires the browser to process such a response.Affected if Opera 7.02 Build 2668 is in use and processes HTTP responses with .ZIP file extension headers
A user is affected if Opera 7.02 Build 2668 is installed and in use; any other version or build of Opera is not vulnerable to this specific 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 dataUpgrade Opera to a version newer than 7.02 Build 2668, as this is a very old (2003) version with known vulnerabilities. If upgrading is not feasible, consider using an alternative browser.
- 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-2003-1388 — 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-2003-1388 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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