CVE-2025-12423Network attack vector

Service interruption via manipulated protocol input

Published Oct 28, 2025 · Updated Oct 28, 2025

Uncaught exception in Azure Access Technology BLU-IC2 and BLU-IC4 through 1.19.5 allows remote attackers to interrupt controller service. Manipulated network protocol input reaches an exception path that the firmware does not catch, but the vendor has not identified the protocol, parser, or triggering field. No authentication or user interaction is required; published material does not distinguish a process crash from a controller reboot or state whether door operation is interrupted.

CVSS severity7.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncaught exception in Azure Access Technology BLU-IC2 and BLU-IC4 through 1.19.5 allows remote attackers to interrupt controller service. Manipulated network protocol input reaches an exception path that the firmware does not catch, but the vendor has not identified the protocol, parser, or triggering field. No authentication or user interaction is required; published material does not distinguish a process crash from a controller reboot or state whether door operation is interrupted.

The record

CVE
CVE-2025-12423
Published
Oct 28, 2025
Updated
Oct 28, 2025
Vendor
Azure Access Technology
Product
BLU-IC4
Classifications
CWE-248, CAPEC-137, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.19.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Azure Access Technology · BLU-IC4version=0 <=1.19.5
Azure Access Technology · BLU-IC2version=0 <=1.19.5

Published CVSS scores

10.0Azure Access TechnologyCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
CAPEC-137Parameter Injection
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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