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Azure Stack HubApplication · Microsoft

CVE-2025-53793

HIGH · 7.5 CVSS v3.1 Published 2025-08-12
Fix available
A fix is available. Upgrade to 1.2406.1.23 / 1.2408.1.50 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Improper authentication in Azure Stack allows an unauthorized attacker to disclose information 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 confidence

Improper authentication in Azure Stack allows an unauthenticated attacker to gain unauthorized access to the system and disclose sensitive information over a network. The vulnerability stems from a weakness in the authentication mechanism that fails to properly validate user credentials or session tokens.

MitigationApply Microsoft security updates for Azure Stack when available. Review and harden authentication configurations, enforce strong credential policies, and implement network segmentation to limit exposure.

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
Azure Stack HubApplication
Affected:>= 1.2406.0.8, < 1.2406.1.23>= 1.2408.0.19, < 1.2408.1.50>= 1.2501.0.21, < 1.2501.1.47

CVSS 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
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 checks

Work through these to decide whether this CVE applies to you.

  1. Retrieve Azure Stack Hub version
    Use PowerShell with the Azure Stack Admin module: Connect-AzureStackAdmin, then run Get-AzureStackStampInformation or check the version via the admin portal under 'Region management' > 'Overview'
    Affected if The installed version cannot be determined or is not visible - but if visible, proceed to version comparison
  2. Compare version against first affected range
    Check if version is >= 1.2406.0.8 and < 1.2406.1.23
    Affected if Version falls within this range, indicating the system is vulnerable
  3. Compare version against second affected range
    Check if version is >= 1.2408.0.19 and < 1.2408.1.50
    Affected if Version falls within this range, indicating the system is vulnerable
  4. Compare version against third affected range
    Check if version is >= 1.2501.0.21 and < 1.2501.1.47
    Affected if Version falls within this range, indicating the system is vulnerable

Your environment is affected if the Azure Stack Hub version falls within any of the three vulnerable version ranges (1.2406.0.8 to 1.2406.1.23, 1.2408.0.19 to 1.2408.1.50, or 1.2501.0.21 to 1.2501.1.47).

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to 1.2406.1.23 / 1.2408.1.50 / 1.2501.1.47 or later
Fixed in 1.2406.1.231.2408.1.501.2501.1.47
Interim mitigation

Apply Microsoft security updates for Azure Stack when available. Review and harden authentication configurations, enforce strong credential policies, and implement network segmentation to limit exposure.

Recommended fix High confidence

Azure Stack Hub 1.2406.1.23, 1.2408.1.50, or 1.2501.1.47 (depending on your current release branch)

  1. Identify the current Azure Stack Hub version by checking the administration portal or using Get-AzsStamp
  2. Determine which version range your current deployment falls into (1.2406.x, 1.2408.x, or 1.2501.x)
  3. Apply the appropriate updated package: upgrade to 1.2406.1.23 or later if on 1.2406.x branch; upgrade to 1.2408.1.50 or later if on 1.2408.x branch; upgrade to 1.2501.1.47 or later if on 1.2501.x branch
  4. Follow standard Azure Stack Hub update procedures using the update blade in the administration portal or azs-update admin module
  5. Verify the update was applied successfully and confirm the new version meets the minimum fixed version requirements
Caveat Azure Stack Hub updates require maintenance windows and may have specific compatibility requirements; test in a staging environment before production deployment

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Azure Stack Hub Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA6.0 h
42.0 hours of engineering $7,360
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-53793 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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