Vulnerability · Published May 12, 2026 · Assigned by microsoft

CVE-2026-33117Azure SDK for Java Security Feature Bypass Vulnerability

Critical 9.1

In plain English

A critical-severity improper authentication in Azure SDK for Java from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.5%top 58.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	com.azure:azure-security-keyvault-keys	4.10.6	GHSA-97jf-46m3-8953

Affected products (as reported)

Vendor	Product	Versions
Microsoft	Azure SDK for Java	1.0.0 – before 4.10.6

Weakness: CWE-287, CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

References

Azure SDK for Java Security Feature Bypass Vulnerability vendor-advisory, patch