CVE-2023-27921
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 · uneditedJINS MEME CORE Firmware version 2.2.0 and earlier uses a hard-coded cryptographic key, which may lead to data acquired by a sensor of the affected product being decrypted by a network-adjacent attacker.
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 confidenceJINS MEME CORE Firmware version 2.2.0 and earlier contains a hard-coded cryptographic key embedded in the firmware. This key is used to encrypt sensor data collected by the device. A network-adjacent attacker can capture the encrypted sensor data and use the known hardcoded key to decrypt it, compromising data confidentiality.
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< 2.3.0CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:L/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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Confirm you have a JINS MEME deviceIdentify whether any JINS MEME smart eyeglasses or related wearable devices are present in your environment. Check device inventory, documentation, or physical inspection of the device model.Affected if The device is a JINS MEME product (Jins Jins Meme).
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Check the installed firmware versionLocate the firmware version through the device management interface, companion mobile application, or device settings. Consult the device documentation for version lookup instructions.Affected if The firmware version is 2.2.0 or earlier, or if the version cannot be determined but is known to be from before 2.3.0.
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Verify sensor data transmission is enabledCheck whether the device is configured to transmit sensor data (such as eye movement or acceleration data) to external systems or paired devices. This is typically configured in the device settings or companion application.Affected if Sensor data encryption is active and the device transmits encrypted data to a connected system.
Your environment is affected if you have a JINS MEME device running firmware version 2.2.0 or earlier and the device transmits encrypted sensor data, because the hardcoded key in those versions can be extracted and used to decrypt that data.
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 data2.3.0
Update the firmware to a version newer than 2.2.0 that replaces the hardcoded key with properly managed cryptographic keys. If no update is available, isolate the device on a restricted network segment to reduce attack surface.
- 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-2023-27921 — 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-2023-27921 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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