CVE-2026-33117

Critical

Description

The Java Key Vault Keys library in the Azure SDK for Java contains an issue in the local cryptographic verification path where authentication tag comparison was implemented incorrectly. In affected applications that use the vulnerable local cryptography path, specially crafted encrypted input may bypass integrity verification checks. Operations delegated to the Key Vault service are not affected. The issue is addressed in version 4.10.6.

SeverityCritical

CVSS9.1

Exploit probability—

Product

Microsoft Azure Sdk For Java

PublishedMay 12, 2026

First seenMay 12, 2026

Weakness typeCWE-287Improper authentication CWE-347CWE-347

How to fix

Update

microsoft azure_sdk_for_java4.10.6 or later
com.azure:azure-security-keyvault-keys4.10.6 or later

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33117

Affected products

Product	Affected versions	Fixed in
microsoft azure_sdk_for_java	v < 4.10.6	4.10.6
com.azure:azure-security-keyvault-keysMaven	v < 4.10.6	4.10.6

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