CVE-2025-53793: Improper authentication in Azure Stack allows an unauthorized attacker to disclose information over a network.

This month

HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2025-53793 is a high-severity flaw (CVSS 7.5) affecting azure stack hub. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper authentication in Azure Stack allows an unauthorized attacker to disclose information over a network.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-22, CWE-287
Published	2025-08-12
Last modified	2026-06-17

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-12 18:15 UTCPublished CVE record published
2026-06-17 09:38 UTCUpdated Record last modified

microsoft azure stack hub UPGRADE

Affected: >= 1.2406.0.8 and < 1.2406.1.23 · >= 1.2408.0.19 and < 1.2408.1.50 · >= 1.2501.0.21 and < 1.2501.1.47

Fixed in: 1.2406.1.23, 1.2408.1.50, 1.2501.1.47

Safe to downgrade to: a release before 1.2406.0.8

1. Check installed version

apt-cache policy azure-stack-hub || rpm -q azure-stack-hub || azure-stack-hub --version

2. UPGRADE to 1.2406.1.23 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade azure-stack-hub

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade azure-stack-hub

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.2406.0.8 (Debian / Ubuntu)

apt-cache madison azure-stack-hub sudo apt install azure-stack-hub=<VERSION_BEFORE_1.2406.0.8> sudo apt-mark hold azure-stack-hub

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list azure-stack-hub sudo dnf downgrade azure-stack-hub-<VERSION_BEFORE_1.2406.0.8> sudo dnf versionlock add azure-stack-hub

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-53793?

azure stack hub: upgrade to 1.2406.1.23, 1.2408.1.50, 1.2501.1.47. Exact commands for each OS are on this page.

Is CVE-2025-53793 being exploited?

CVE-2025-53793 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-53793 affect?

CVE-2025-53793 affects azure stack hub. Severity is high (CVSS 7.5). Improper authentication in Azure Stack allows an unauthorized attacker to disclose information over a network.

How urgent is CVE-2025-53793?

Priority 54/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Azure vulnerabilities

Related CVEs

CVE-2024-38220 CRITICAL 9.0 UPGRADE Azure Stack Hub Elevation of Privilege Vulnerability
CVE-2024-38216 HIGH 8.2 UPGRADE Azure Stack Hub Elevation of Privilege Vulnerability
CVE-2024-20679 MEDIUM 6.5 UPGRADE Azure Stack Hub Spoofing Vulnerability
CVE-2024-38201 HIGH 7.0 UPGRADE Azure Stack Hub Elevation of Privilege Vulnerability
CVE-2024-38108 CRITICAL 9.3 UPGRADE Azure Stack Hub Spoofing Vulnerability

References

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