CVE-2026-33117
Azure SDK for Java Security Feature Bypass Vulnerability
- Published
- May 12, 2026
- Updated
- Aug 10, 2026
- Assigning CNA
- microsoft
- Evidence observed
- Aug 17, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NLow · next 30 days
- Percentile
- 40.4%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1Proof-of-concept exploit for CVE-2026-50338: cross-issuer authentication bypass in Spring Cloud Azure B2C resource servers. Demonstrates token forgery via AAD app registration to access protected B2C endpoints.
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