What’s Vulnerable › Vulnerabilities

CVE-2026-88132: Azure Key Vault Information Disclosure Vulnerability

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-13 · updated 2026-10-31
• Weakness: CWE-346

Description

Origin validation error in Azure Key Vault allows an unauthorized attacker to disclose information over a network.

Affected products

• Microsoft azure-keyvault-administration: from 4.7.1 before 4.8.2 — fixed in 4.8.2
• Microsoft azure-keyvault-certificates: from 4.11.2 before 4.9.2 — fixed in 4.9.2
• Microsoft azure-keyvault-keys: from 4.11.2 before 4.10.2 — fixed in 4.10.2
• Microsoft azure-keyvault-secrets: from 4.11.2 before 4.11.2 — fixed in 4.11.2

How to fix

Upgrade to a fixed version: Microsoft azure-keyvault-administration 4.8.2; Microsoft azure-keyvault-certificates 4.9.2; Microsoft azure-keyvault-keys 4.10.2; Microsoft azure-keyvault-secrets 4.11.2. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88132

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