CVE-2008-7166
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 the web interface in BitTorrent 6.0.1 (build 7859) and earlier, and uTorrent 1.7.6 (build 7859) and earlier, allows remote attackers to cause a denial of service (memory consumption and crash) via a crafted Range header. NOTE: this is probably a different vulnerability than CVE-2008-0071 and CVE-2008-0364.
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 confidenceBuffer overflow vulnerability in the web interface of BitTorrent 6.0.1 and uTorrent 1.7.6 and earlier versions allows remote attackers to cause denial of service via specially crafted HTTP Range headers, leading to excessive memory consumption and application crash.
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<= 6.0.1= 3.9.1= 4.0.0= 4.0.1= 4.0.2= 4.0.3= 4.0.4= 4.1.0= 4.1.1= 4.1.2= 4.1.3= 4.1.4<= 1.7.6= 1.1.1= 1.1.3= 1.1.4= 1.1.5= 1.1.6= 1.1.7= 1.2= 1.2.1= 1.2.2= 1.3= 1.4CVSS 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
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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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Verify BitTorrent or uTorrent is installedCheck the installed software on the system for BitTorrent or uTorrent clients. Look for executables or installed applications.Affected if Either BitTorrent or uTorrent client is installed on the system
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Check the installed versionOpen the BitTorrent or uTorrent client and navigate to Help > About or check the application properties to determine the exact version number.Affected if The version matches any of the affected versions: BitTorrent <= 6.0.1, 3.9.1, 4.0.x, 4.1.x; or uTorrent <= 1.7.6, 1.1.x, 1.2.x, 1.3, 1.4
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Determine if the web interface is enabledIn the client, go to Settings > Web Interface or Preferences > Web. Check if the web interface feature is turned on and note the listening port.Affected if The web interface is enabled and running on a specific port (typically 8080 or 9091)
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Confirm web interface accessibilityOpen a web browser and navigate to http://localhost:<port> where <port> is the configured web interface port, or attempt a remote connection to the client's IP:port.Affected if The web interface responds to HTTP requests, making it potentially reachable over the network
A user is affected if they have an affected version of BitTorrent or uTorrent installed AND the web interface is enabled and accessible, as the vulnerability is triggered through specially crafted HTTP Range headers to the web interface.
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 to newer versions of BitTorrent/uTorrent that address this vulnerability; if upgrade is not possible, disable the web interface or restrict network access to trusted sources.
- Consultation2.0 h
- Implementation2.0 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-2008-7166 — 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-2008-7166 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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