CVE-2026-21532: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Azure Functions
Azure Function Information Disclosure Vulnerability
AI Analysis
Technical Summary
This vulnerability in Microsoft Azure Functions allows unauthorized actors to gain access to sensitive information due to improper information handling or exposure. The CVSS vector indicates that the attack can be performed remotely over the network without authentication or user interaction, leading to a high confidentiality impact while integrity and availability impacts are low or none. The vulnerability has been officially published and a patch is available to remediate the issue.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive data within Azure Functions environments. The confidentiality impact is high, meaning sensitive information could be exposed to attackers. Integrity impact is low and availability is not affected. There are no reports of active exploitation in the wild.
Mitigation Recommendations
An official patch is available for this vulnerability and should be applied promptly to affected Azure Functions deployments. Since this is not a cloud-hosted service vulnerability, users must ensure their Azure Functions instances are updated with the latest security fixes from Microsoft. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-21532: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Azure Functions
Description
Azure Function Information Disclosure Vulnerability
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Azure Functions allows unauthorized actors to gain access to sensitive information due to improper information handling or exposure. The CVSS vector indicates that the attack can be performed remotely over the network without authentication or user interaction, leading to a high confidentiality impact while integrity and availability impacts are low or none. The vulnerability has been officially published and a patch is available to remediate the issue.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive data within Azure Functions environments. The confidentiality impact is high, meaning sensitive information could be exposed to attackers. Integrity impact is low and availability is not affected. There are no reports of active exploitation in the wild.
Mitigation Recommendations
An official patch is available for this vulnerability and should be applied promptly to affected Azure Functions deployments. Since this is not a cloud-hosted service vulnerability, users must ensure their Azure Functions instances are updated with the latest security fixes from Microsoft. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-30T18:10:54.847Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 698519f1f9fa50a62f46352f
Added to database: 2/5/2026, 10:30:09 PM
Last enriched: 4/11/2026, 5:32:54 AM
Last updated: 5/6/2026, 12:08:47 PM
Views: 205
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