CVE-2026-50652
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 · uneditedDeserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.
In the news
Third-party coverage- Microsoft July 2026 Patch Tuesday fixes massive 570 flaws, 3 zero-days
- Microsoft CVE Summary - Bleeping Computer
Surfaced from public web coverage — external links open in a new tab.
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 confidenceAzure Active Directory contains a deserialization vulnerability where untrusted data is processed without proper validation, enabling an unauthenticated remote attacker to cause a denial of service by crashing the service or rendering it unavailable.
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 data= 3.5= 4.8.1= 4.6.2= 4.7= 4.7.1= 4.7.2= 4.8all 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Identify if you use Azure Active Directory cloud servicesReview your organization's subscriptions in the Azure Portal or check with your Azure administrator to confirm usage of Azure AD (now Microsoft Entra ID)Affected if Your organization uses Azure AD for identity management - you rely on Microsoft to patch this cloud service
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Check for on-premises Azure AD Connect or related toolsOn servers that integrate with Azure AD, check installed programs for Azure AD Connect, Azure AD Sync, or similar Microsoft identity sync toolsAffected if You have Azure AD Connect or related Microsoft identity synchronization software installed that might be affected
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Identify .NET Framework versions on servers running Azure AD toolsOn servers with Azure AD Connect or similar tools, check the .NET Framework version by reviewing installed Windows updates or checking the registry key HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\FullAffected if The server runs .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, or 4.8.1 and has Azure AD integration tools installed
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Check if your Azure AD tenant receives authentication requests directlyReview Azure AD tenant settings in the Azure Portal under 'Security' > 'Authentication methods' to understand authentication flow configurationAffected if Your Azure AD tenant processes authentication requests - the service vulnerability is managed by Microsoft
Since Azure AD is a Microsoft-managed cloud service, the primary detection is confirming your organization uses Azure AD and monitoring Microsoft's official security advisories for patch availability.
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 dataSince this is a cloud service vulnerability in Azure Active Directory, organizations should monitor Microsoft security advisories for the availability of patches and apply them promptly once released. Implement rate limiting and monitoring to detect and mitigate DoS attempts.
- Consultation4.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-50652 — 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-2026-50652 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
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