Security feature bypass vulnerability in Azure Key Vault Keys library for Java

CVE-2026-33117 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

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.

Basic information

Type
reviewed
Severity
critical
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Browse source ↗
Published (advisory)
2026-05-12 18:30:42 UTC
Updated
2026-06-02 22:18:30 UTC
GitHub reviewed
2026-06-02 22:18:30 UTC
NVD published
2026-05-12 18:17:04 UTC

EPSS Score

Score Percentile
0.03% 8.61%

CVSS Scores

Base score Version Severity Vector
9.1 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-97jf-46m3-8953 ↗
CVE CVE-2026-33117 ↗

CWEs

CWE id Name
CWE-287 Improper Authentication
CWE-347 Improper Verification of Cryptographic Signature

Credits

  • scottaddie (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven com.azure:azure-security-keyvault-keys < 4.10.6 4.10.6 —

References

cvelogic Threat Intelligence