CVE-2025-12515Network attack vector

Unauthenticated service disruption via HTTP 500 responses

Published Oct 30, 2025 · Updated Oct 30, 2025

Unexpected status-code handling in Azure Access Technology BLU-IC2 and BLU-IC4 1.19.5 and earlier allows remote attackers to disrupt service. The vendor has not published the affected endpoint, crafted input, or internal operation that causes the systemic HTTP 500 responses. Network access without authentication or user interaction is sufficient, but the disclosed consequence is limited to failed server requests.

CVSS severity10.0
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unexpected status-code handling in Azure Access Technology BLU-IC2 and BLU-IC4 1.19.5 and earlier allows remote attackers to disrupt service. The vendor has not published the affected endpoint, crafted input, or internal operation that causes the systemic HTTP 500 responses. Network access without authentication or user interaction is sufficient, but the disclosed consequence is limited to failed server requests.

The record

CVE
CVE-2025-12515
Published
Oct 30, 2025
Updated
Oct 30, 2025
Vendor
Azure Access Technology
Product
BLU-IC4
Classifications
CWE-394, CAPEC-116, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 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
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-394Unexpected Status Code or Return Value
CAPEC-116Excavation
T1499Endpoint Denial of Service

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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