CVE-2025-59500
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImproper access control in Azure Notification Service allows an authorized attacker to elevate privileges over a network.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceImproper access control in Azure Notification Service allows an authenticated attacker to elevate privileges by exploiting insufficient authorization checks, potentially enabling lateral movement or access to resources beyond their assigned permissions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE dataall versionsCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Azure Notification Service usageRun 'az notificationhubs namespace list' or check Azure Resource Manager for resources of type 'Microsoft.NotificationHubs/namespaces' in your subscriptionAffected if No Azure Notification Service resources are deployed - the vulnerability only affects environments using this service
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Identify over-privileged principalsReview role assignments at the namespace or notification hub level using 'az role assignment list --scope <namespace-resource-id>' and check for roles beyond what is required for the principal's functionAffected if Any service principal, managed identity, or user account has permissions beyond what they need for their specific role (violates least-privilege)
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Audit custom access policiesCheck for any custom SAS (Shared Access Signature) policies or access policies configured on notification hubs using 'az notificationhubs hub authorization-rule list --resource-group <rg> --namespace-name <ns> --hub-name <hub>'Affected if Non-default or overly permissive SAS policies exist that grant broader access than necessary
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Review role definition assignmentsCompare assigned roles against the principle of least privilege - specifically check for owner, contributor, or elevated DataActions permissions on the notification namespaceAffected if Accounts have Owner, Contributor, or elevated DataAction roles on the notification namespace when they only need specific narrower permissions
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Check for cross-tenant or external principal accessExamine role assignments for any principals from other Azure AD tenants or external identities that have access to the notification namespaceAffected if External or cross-tenant principals have any access to the notification service resources
If Azure Notification Service is deployed and any principals have more permissions than minimally required for their specific function, the environment may be vulnerable to this privilege escalation flaw.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataMonitor for unexpected permission changes and privilege escalation attempts in Azure Notification Service; apply Microsoft security patches upon release and follow least-privilege principles for service accounts.
- Consultation4.0 h
- Implementation2.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,160.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-59500 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-59500 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data