CVE-2020-9526
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 · uneditedCS2 Network P2P through 3.x, as used in millions of Internet of Things devices, suffers from an information exposure flaw that exposes user session data to supernodes in the network, as demonstrated by passively eavesdropping on user video/audio streams, capturing credentials, and compromising devices.
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 · high confidenceCS2 Network P2P through version 3.x, used in millions of IoT devices (primarily video cameras), contains an information exposure vulnerability where supernodes in the P2P network can passively intercept user session data including video/audio streams, capture credentials, and potentially compromise devices.
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<= 3.0.3aCVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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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Identify CS2 Network P2P software presenceExamine the device or software inventory for CS2 Network P2P or related P2P components. For IoT video cameras, check the firmware or network stack documentation for references to 'CS2', 'P2P', or proprietary peer-to-peer networking modules.Affected if CS2 Network P2P software is present on the device or in the deployed solution
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Determine the installed P2P versionRetrieve the version information of the CS2 Network P2P component. This may be available in the device firmware, in the software about page, or via SNMP/network enumeration of the P2P service. Compare the version against the affected range: any version <= 3.0.3a.Affected if The installed version is 3.0.3a or any earlier version
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Verify P2P connectivity is enabledCheck the device or software configuration for P2P network functionality. Look for settings such as 'P2P', 'Cloud P2P', 'Remote Access via P2P', or 'NAT traversal' that enable the device to connect to the CS2 peer-to-peer overlay network.Affected if P2P features are enabled and the device connects to external supernodes
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Inspect P2P network exposureReview network traffic or configuration to confirm the device is reachable via P2P protocols (often uses custom ports or tunneled traffic). Verify whether the device is accessible from the internet through the P2P backbone without proper VPN or authentication wrappers.Affected if The device uses P2P as the primary or secondary remote access method and is exposed to untrusted supernodes
A user is affected if their IoT device (video camera) runs CS2 Network P2P version 3.0.3a or earlier AND has P2P functionality enabled, allowing the device to connect to the peer-to-peer network where session data can be intercepted by supernodes.
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 dataApply vendor patches for CS2 Network P2P; if unavailable, disable P2P features, segment affected devices on isolated networks, or replace end-of-life devices with patched alternatives.
- Consultation8.0 h
- Implementation24.0 h
- Testing16.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-9526 — 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-2020-9526 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