CVE-2026-33117: CWE-287: Improper Authentication in Microsoft Azure SDK for Java
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.
AI Analysis
Technical Summary
The vulnerability in Microsoft Azure SDK for Java's Java Key Vault Keys library involves improper authentication due to incorrect comparison of authentication tags in the local cryptographic verification path. This flaw can allow attackers to bypass integrity verification checks when processing specially crafted encrypted inputs locally. Operations that rely on the Azure Key Vault service itself are not affected. Microsoft has issued an official fix addressing this issue in version 4.10.6. The vulnerability is tracked as CVE-2026-33117 with a CVSS 3.1 score of 9.1, indicating critical severity.
Potential Impact
Successful exploitation can lead to bypassing integrity verification in local cryptographic operations, potentially allowing unauthorized access or manipulation of cryptographic keys or data within affected applications using the vulnerable local cryptography path. However, operations delegated to the Azure Key Vault service remain secure and unaffected by this vulnerability.
Mitigation Recommendations
An official fix is available in Microsoft Azure SDK for Java version 4.10.6. Users should upgrade to this version or later to remediate the vulnerability. Since this is a cloud service SDK, Microsoft manages remediation for the cloud-hosted Key Vault service, which is not affected. No additional mitigation is required for operations delegated to the Key Vault service.
CVE-2026-33117: CWE-287: Improper Authentication in Microsoft Azure SDK for Java
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.
CVSS v3.1
Score 9.1critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Microsoft Azure SDK for Java's Java Key Vault Keys library involves improper authentication due to incorrect comparison of authentication tags in the local cryptographic verification path. This flaw can allow attackers to bypass integrity verification checks when processing specially crafted encrypted inputs locally. Operations that rely on the Azure Key Vault service itself are not affected. Microsoft has issued an official fix addressing this issue in version 4.10.6. The vulnerability is tracked as CVE-2026-33117 with a CVSS 3.1 score of 9.1, indicating critical severity.
Potential Impact
Successful exploitation can lead to bypassing integrity verification in local cryptographic operations, potentially allowing unauthorized access or manipulation of cryptographic keys or data within affected applications using the vulnerable local cryptography path. However, operations delegated to the Azure Key Vault service remain secure and unaffected by this vulnerability.
Mitigation Recommendations
An official fix is available in Microsoft Azure SDK for Java version 4.10.6. Users should upgrade to this version or later to remediate the vulnerability. Since this is a cloud service SDK, Microsoft manages remediation for the cloud-hosted Key Vault service, which is not affected. No additional mitigation is required for operations delegated to the Key Vault service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-17T20:15:23.721Z
- 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-2026-33117","vendor":"Microsoft"}]
Threat ID: 6a036539cbff5d861008c32b
Added to database: 05/12/2026, 17:36:57 UTC
Last enriched: 06/19/2026, 17:30:35 UTC
Last updated: 07/07/2026, 10:33:23 UTC
Views: 132
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