CVE-2025-8762
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 · uneditedA vulnerability was found in INSTAR 2K+ and 4K 3.11.1 Build 1124. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper physical access control. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used.
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 physical access control vulnerability exists in INSTAR 2K+ and 4K cameras (firmware 3.11.1 Build 1124) in the UART interface component. An attacker with physical access to the device can exploit this to gain unauthorized access or control through the UART interface, which lacks proper access restrictions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Physical
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:P/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.
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Identify INSTAR camera modelLocate the model label on your INSTAR camera body or check the product documentation/packaging to confirm it is a 2K+ or 4K series model.Affected if The camera is an INSTAR 2K+ or 4K model.
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Check installed firmware versionAccess the camera web interface or INSTAR app, navigate to System or Settings > Device Info, and record the firmware version and build number displayed.Affected if The firmware version is 3.11.1 with Build 1124.
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Inspect UART hardware accessibilityPhysically examine the camera circuit board (requires opening the housing) for exposed UART header pins or connectors. Note whether the UART interface is exposed or accessible on the device exterior.Affected if UART pins or headers are physically present and accessible on the device.
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Verify physical access controlsAssess whether the camera is located in a secured area with restricted physical access, or if the device is deployed in publicly accessible locations where tampering is possible.Affected if The camera is deployed in an area with uncontrolled physical access.
You are affected if you own an INSTAR 2K+ or 4K camera running firmware 3.11.1 Build 1124 with an accessible UART interface in an uncontrolled physical environment.
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-provided firmware updates when available. In the interim, restrict physical access to camera devices, disable or physically remove unnecessary UART headers, and monitor for unauthorized physical tampering.
- Consultation8.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,608.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-8762 — 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-2025-8762 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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