CVE-2026-26147: CWE-20: Improper Input Validation in Microsoft Azure Stack HCI
Improper input validation in Azure Compute Gallery allows an authorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability involves improper input validation in the Azure Compute Gallery component of Microsoft Azure Stack HCI. An authorized attacker can exploit this flaw to disclose information over a network, impacting confidentiality without affecting integrity or availability. The CVSS 3.1 vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and a scope change with high confidentiality impact. Microsoft has released an official fix and manages remediation for this cloud-hosted service.
Potential Impact
An authorized attacker can disclose sensitive information over the network due to improper input validation. The confidentiality impact is high, but integrity and availability are not affected. There are no known exploits in the wild currently.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability and manages remediation for the Azure Stack HCI cloud service. Users should ensure their Azure Stack HCI environment is updated according to Microsoft's guidance available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26147.
CVE-2026-26147: CWE-20: Improper Input Validation in Microsoft Azure Stack HCI
Description
Improper input validation in Azure Compute Gallery allows an authorized attacker to disclose information over a network.
CVSS v3.1
Score 7.7high
Affected software
Microsoft
Azure Stack HCI
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper input validation in the Azure Compute Gallery component of Microsoft Azure Stack HCI. An authorized attacker can exploit this flaw to disclose information over a network, impacting confidentiality without affecting integrity or availability. The CVSS 3.1 vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and a scope change with high confidentiality impact. Microsoft has released an official fix and manages remediation for this cloud-hosted service.
Potential Impact
An authorized attacker can disclose sensitive information over the network due to improper input validation. The confidentiality impact is high, but integrity and availability are not affected. There are no known exploits in the wild currently.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability and manages remediation for the Azure Stack HCI cloud service. Users should ensure their Azure Stack HCI environment is updated according to Microsoft's guidance available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26147.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T16:24:51.135Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26147","vendor":"Microsoft"}]
Threat ID: 6a10d8e4e1370fbb485de02b
Added to database: 05/22/2026, 22:29:56 UTC
Last enriched: 08/11/2026, 16:30:40 UTC
Last updated: 09/10/2026, 21:03:48 UTC
Views: 107
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