CVE-2025-12423
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 · uneditedProtocol manipulation might lead to denial of service.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5 .
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 protocol manipulation vulnerability in BLU-IC2 and BLU-IC4 devices (versions through 1.19.5) allows attackers to potentially cause denial of service by manipulating protocol handling. The CVSS 7.5 indicates network-exploitable, low-complexity attacks with no authentication required.
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< 1.20< 1.20CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 the device modelCheck the physical device label or access the device management interface to confirm the model is BLU-IC2 or BLU-IC4 from Azure AccessAffected if The device is not a BLU-IC2 or BLU-IC4 model - these are the only affected models
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Determine the firmware versionAccess the device administrative interface or use the vendor's management tool to retrieve the current firmware version. Compare it to the affected range of versions prior to 1.20Affected if The installed firmware version is 1.19.5 or any version below 1.20 - these versions contain the vulnerability
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Verify network accessibilityConfirm the device has an IP address and is reachable on the network. Check if the management interface or protocol ports are exposed beyond the local network segmentAffected if The device is network-accessible and its management or protocol interfaces are reachable from network segments outside of isolated control networks
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Check protocol handling configurationReview the device configuration for any non-standard or experimental protocol handling settings that may increase the attack surface for protocol manipulationAffected if Non-standard protocol settings are enabled that deviate from vendor defaults
A user is affected if they have a BLU-IC2 or BLU-IC4 device running firmware version 1.19.5 or below (any version prior to 1.20) that is network-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 · scoped1.20
Implement network segmentation to restrict access to affected devices; monitor vendor for available patches and apply once released.
Blu Ic2 Firmware 1.20 and Blu Ic4 Firmware 1.20
- Identify the specific Blu Ic2 or Blu Ic4 device model and current firmware version
- Download the firmware version 1.20 from the official vendor repository or support portal
- Review the firmware upgrade documentation for your specific device model
- Ensure the device has sufficient power backup during the firmware upgrade process
- Upload and apply firmware version 1.20 to the device
- Verify the firmware upgrade was successful by checking the version number
- Test device functionality to confirm normal operation after upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-12423 — 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-2025-12423 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