Auth bypass in Microsoft Azure Sdk For Java
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Microsoft Azure Sdk For Java — versions 1.0.0
- Microsoft Azure Sdk For Java
Weakness classification (CWE)
References
- Azure SDK for Java Security Feature Bypass Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33117?
- CVE-2026-33117 is a critical-severity vulnerability in Microsoft Azure Sdk For Java, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-05-12.
- How severe is CVE-2026-33117?
- Critical severity. CVSS v3 base score is 9.1 out of 10.