CVE-2025-59500Network attack vector

Authenticated privilege escalation

Published Oct 23, 2025 · Updated Oct 23, 2025

Improper access control in Microsoft Azure Notification Service allows remote authenticated users to elevate privileges over a network. Microsoft has not published the affected authorization check, resource, request field, or incorrect operation on untrusted input. Authenticated access is required, and the published impact is limited to unauthorized modification across a security boundary.

CVSS severity7.7
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Microsoft Azure Notification Service allows remote authenticated users to elevate privileges over a network. Microsoft has not published the affected authorization check, resource, request field, or incorrect operation on untrusted input. Authenticated access is required, and the published impact is limited to unauthorized modification across a security boundary.

The record

CVE
CVE-2025-59500
Published
Oct 23, 2025
Updated
Oct 23, 2025
Vendor
Microsoft
Product
Azure Notification Service
Classifications
CWE-284
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 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=N/A

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Azure Notification Serviceversion=N/A

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

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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