CVE-2025-12602Network attack vector

Authenticated configuration overwrite via arbitrary Avahi file write

Published Nov 1, 2025 · Updated Nov 1, 2025

Arbitrary file write in Azure Access Technology BLU-IC2 and BLU-IC4 1.19.5 and earlier allows remote authenticated users to alter Avahi configuration. The affected firmware can arbitrarily write /etc/avahi/services/z9.service, but the vendor has not disclosed the input path or faulty write operation. Reachability requires network access and low privileges; overwriting this service definition changes stored configuration and can affect controller confidentiality, integrity, and availability.

CVSS severity2.3
Low
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file write in Azure Access Technology BLU-IC2 and BLU-IC4 1.19.5 and earlier allows remote authenticated users to alter Avahi configuration. The affected firmware can arbitrarily write /etc/avahi/services/z9.service, but the vendor has not disclosed the input path or faulty write operation. Reachability requires network access and low privileges; overwriting this service definition changes stored configuration and can affect controller confidentiality, integrity, and availability.

The record

CVE
CVE-2025-12602
Published
Nov 1, 2025
Updated
Nov 1, 2025
Vendor
Azure Access Technology
Product
BLU-IC4
Classifications
CWE-787, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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 privilegesauthenticated

What is affected?

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

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.3Azure Access TechnologyCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1565.001Stored Data Manipulation

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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