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Vulnerabilities/CVE-2025-12477Public Intelligence Dossier
Source: azure-access · Limited verification•Last verified: •Collection Degraded
CVE-2025-12477Unknown / EvaluatingCRITICAL (raw)CVSS 10.0CWE-306

Server Version Disclosure.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5 .

Published: 29 Oct 2025•Last updated: 19 Oct 2026, 02:40 AM IST•Source identifier: a0340c66-c385-4f8b-991b-3d05f6fd5220
Dossier completeness: source-provided sections 2 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
10.0CRITICAL (raw)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Metric sourcea0340c66-c385-4f8b-991b-3d05f6fd5220
EPSS probability
0.3%0.003
Percentile27th
Weakness type
CWE-306
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

Server Version Disclosure.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5 .

SOC priority

High Severity / Review

Actively exploited

Unknown

Publicly disclosed

Unknown

Risk basis: Microsoft or Microsoft-managed product relevance; CRITICAL severity; Critical CVSS without confirmed KEV exploitation

Affected Products & Remediation

2 source-backed products
Affected products and versions (source)
  • azure-access blu-ic2 firmware · < 1.20 · NVD CPE · Source
  • azure-access blu-ic4 firmware · < 1.20 · NVD CPE · Source
NVD applicability prerequisites: cpe:2.3:h:azure-access:blu-ic2:*:*:*:*:*:*:*:*, cpe:2.3:h:azure-access:blu-ic4:*:*:*:*:*:*:*:*. These are conditions, not proof that an environment is exposed or unaffected.
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched authentication-weakness (CWE-306); network-unauthenticated (CVSS AV:N, CVSS PR:N, CVSS UI:N)

Exposure

  1. Identify affected authentication surfaces and compare versions with the advisory.Telemetry: Application inventory · A CWE match is not proof of local exposure. · Rule authentication-weakness
  2. Identify devices reporting this CVE and note which expose the affected service to untrusted networks.Telemetry: DeviceTvmSoftwareVulnerabilities · A network-reachable, no-privilege vector makes internet-facing instances the first exposure question. · Rule network-unauthenticated

Exploitation evidence

  1. Review unexpected successful sign-ins and changes to privileged accounts on affected systems.Telemetry: SigninLogs · Access anomalies are relevant to authentication weaknesses. · Rule authentication-weakness
Show more (2)

Exploitation evidence

  1. Review inbound connections to the affected service from unexpected sources since the advisory date.Telemetry: DeviceNetworkEvents · Hunting hypothesis from the CVSS vector; it does not show that exploitation occurred. · Rule network-unauthenticated

Response

  1. Verify the vendor fix and review privileged access after remediation.Telemetry: Identity audit logs · Post-change review checks the response. · Rule authentication-weakness

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
a0340c66-c385-4f8b-991b-3d05f6fd5220
Record status · verification
UPDATED · NVD API
CPE
cpe:2.3:o:azure-access:blu-ic2_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:azure-access:blu-ic2:*:*:*:*:*:*:*:*, cpe:2.3:o:azure-access:blu-ic4_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:azure-access:blu-ic4:*:*:*:*:*:*:*:*

Evidence & Provenance

2 public sources
azure-access.comSource recordnvd.nist.govSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2025-12477
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2025-12477
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2025-12477"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library
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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.