CVE-2025-12601Network attack vector

Unauthenticated service interruption via incomplete HTTP requests

Published Nov 1, 2025 · Updated Nov 1, 2025

Slowloris denial of service in Azure Access Technology BLU-IC2 and BLU-IC4 through 1.19.5 allows remote attackers to interrupt service. The embedded HTTP service retains numerous incomplete client requests until connection-handling resources are exhausted. No authentication or user interaction is required, and the published record does not specify whether the result is a hang, crash, or reboot.

CVSS severity10.0
Critical
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

Slowloris denial of service in Azure Access Technology BLU-IC2 and BLU-IC4 through 1.19.5 allows remote attackers to interrupt service. The embedded HTTP service retains numerous incomplete client requests until connection-handling resources are exhausted. No authentication or user interaction is required, and the published record does not specify whether the result is a hang, crash, or reboot.

The record

CVE
CVE-2025-12601
Published
Nov 1, 2025
Updated
Nov 1, 2025
Vendor
Azure Access Technology
Product
BLU-IC4
Classifications
CWE-730, CAPEC-469, T1499.002
Attack vector
network
Privileges
unauthenticated

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 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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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

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-730OWASP Top Ten 2004 Category A9 - Denial of Service
CAPEC-469HTTP DoS
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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