CVE-2026-70352Network attack vector

Unauthenticated privilege escalation via unguarded critical function

Published Sep 3, 2026 · Updated Sep 10, 2026

Missing authentication in Microsoft Azure AI Language Authoring allows remote attackers to elevate privileges through hosted authoring APIs. Microsoft has not disclosed which authoring API operation omits authentication or how requests reach the affected function. Successful exploitation grants privileges across a security boundary without credentials or user interaction.

CVSS severity10.0
Critical
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Microsoft Azure AI Language Authoring allows remote attackers to elevate privileges through hosted authoring APIs. Microsoft has not disclosed which authoring API operation omits authentication or how requests reach the affected function. Successful exploitation grants privileges across a security boundary without credentials or user interaction.

The record

CVE
CVE-2026-70352
Published
Sep 3, 2026
Updated
Sep 10, 2026
Vendor
Microsoft
Product
Azure AI Language Authoring
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record 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=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Azure AI Language Authoringversion=-

Published CVSS scores

10.0MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
8.7MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

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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