CVE-2020-9527
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 · uneditedFirmware developed by Shenzhen Hichip Vision Technology (V6 through V20, after 2018-08-09 through 2020), as used by many different vendors in millions of Internet of Things devices, suffers from buffer overflow vulnerability that allows unauthenticated remote attackers to execute arbitrary code via the peer-to-peer (P2P) service. This affects products marketed under the following brand names: Accfly, Alptop, Anlink, Besdersec, BOAVISION, COOAU, CPVAN, Ctronics, D3D Security, Dericam, Elex System, Elite Security, ENSTER, ePGes, Escam, FLOUREON, GENBOLT, Hongjingtian (HJT), ICAMI, Iegeek, Jecurity, Jennov, KKMoon, LEFTEK, Loosafe, Luowice, Nesuniq, Nettoly, ProElite, QZT, Royallite, SDETER, SV3C, SY2L, Tenvis, ThinkValue, TOMLOV, TPTEK, WGCC, and ZILINK.
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 confidenceBuffer overflow vulnerability in the peer-to-peer (P2P) service of Shenzhen Hichip Vision firmware (V6-V20, 2018-2020) allows unauthenticated remote attackers to execute arbitrary code. This affects dozens of IoT camera brands through a flaw in the P2P communication protocol.
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< 2020-06-29CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
-
Identify the device firmware typeCheck your IoT camera or device documentation, web interface, or system information to determine if it uses Hichip Shenzhen Hichip Vision Technology firmware. Look for 'Hichip' or 'HiChip' in the firmware branding, manufacturer strings, or device specifications.Affected if The device runs Hichip-based firmware from various rebranded brands ( dozens of IoT camera vendors use this firmware)
-
Check the installed firmware version or dateAccess the device web interface, administrative console, or use vendor-provided tools to retrieve the firmware version or build date. Compare it to the affected date 2020-06-29.Affected if The firmware version is dated before 2020-06-29 or the version string indicates a pre-patch build
-
Verify if the P2P feature is enabledLog into the device administrative interface and navigate to network or P2P settings. Check whether the peer-to-peer (P2P) cloud service feature is turned on or configured.Affected if P2P functionality is enabled - this is the vulnerable service component that exposes the device
-
Check P2P network exposureReview firewall rules and network configuration to determine if the device P2P ports (typically UDP/TCP ports used by P2P protocols) are accessible from untrusted networks or the internet.Affected if P2P service ports are reachable from external or untrusted networks, indicating direct exposure to the vulnerability
A user is affected if the device runs Hichip firmware dated before 2020-06-29 AND has the P2P feature enabled and accessible.
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 · scoped2020-06-29
Organizations should identify affected devices by brand/model, apply available firmware patches, disable P2P features if not required, or replace unsupported devices; network segmentation and blocking of external P2P traffic can reduce exposure until remediation is possible.
Firmware version 2020-06-29 or later from the respective device vendor
- Identify the specific device model and vendor from the affected brand list
- Visit the vendor's support website or contact vendor support to obtain firmware version 2020-06-29 or later
- Download the firmware update file from an official vendor source
- Follow vendor-specific instructions to upload and install the firmware update, typically through the device's web interface or companion mobile app
- After updating, verify the firmware version matches or exceeds 2020-06-29
- If no firmware update is available from the vendor, consider replacing the device with a model from a vendor that provides timely security updates
- As a temporary mitigation, disable the P2P (peer-to-peer) service if not required, though this may impact device functionality
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation24.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $14,080.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-9527 — 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-2020-9527 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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