Published May 12, 2026Sources checked Nov 11, 2026
9.1CRITICALCVSS out of 10
What this means
Review the available evidence
CVE-2026-33117 and is rated Critical severity with a CVSS score of 9.1. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: May 22, 2026
Release Notes
Vendor-listed releases
4.10.6
CISA KEVNot listedBased on the latest collected catalog
EPSS0.5%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-33117?
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.