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CVE-2026-21532: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Azure Functions

0
High
VulnerabilityCVE-2026-21532cvecve-2026-21532cwe-200
Published: Thu Feb 05 2026 (02/05/2026, 22:13:24 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Azure Functions

Description

Azure Function Information Disclosure Vulnerability

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/11/2026, 05:32:54 UTC

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.

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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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