Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Exploiting this vulnerability would require an attacker modify the response to take the desired action. An attacker would also have to rely on compromising the principal consuming the SDK, which is beyond attacker's control.
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
Successful exploitation could allow an attacker to bypass the challenge-response validation that verifies a Key Vault authentication challenge before it is cached. This could allow a client to send an access token or request data to an untrusted host instead of the intended Key Vault service.
Security updates
4.11.2 — https://github.com/Azure/azure-sdk-for-python/blob/azure-keyvault-secrets_4.11.2/sdk/keyvault/azure-keyvault-secrets/CHANGELOG.md
4.11.2 — https://github.com/Azure/azure-sdk-for-python/blob/azure-keyvault-keys_4.11.2/sdk/keyvault/azure-keyvault-keys/CHANGELOG.md
4.11.2 — https://github.com/Azure/azure-sdk-for-python/blob/azure-keyvault-certificates_4.11.2/sdk/keyvault/azure-keyvault-certificates/CHANGELOG.md
4.7.1 — https://github.com/Azure/azure-sdk-for-python/blob/azure-keyvault-administration_4.7.1/sdk/keyvault/azure-keyvault-administration/CHANGELOG.md
1.0.0b3 — https://github.com/Azure/azure-sdk-for-python/blob/azure-keyvault-securitydomain_1.0.0b3/sdk/keyvault/azure-keyvault-securitydomain/CHANGELOG.md
1.0.1 — https://github.com/Azure/azure-sdk-for-rust/blob/azure_security_keyvault_keys%401.0.1/sdk/keyvault/azure_security_keyvault_keys/CHANGELOG.md
1.0.1 — https://github.com/Azure/azure-sdk-for-rust/blob/azure_security_keyvault_certificates%401.0.1/sdk/keyvault/azure_security_keyvault_certificates/CHANGELOG.md
1.0.1 — https://github.com/Azure/azure-sdk-for-rust/blob/azure_security_keyvault_secrets%401.0.1/sdk/keyvault/azure_security_keyvault_secrets/CHANGELOG.md
Vulnerabilities 1
-
High 7.4
Azure Key Vault Security Feature Bypass Vulnerability
Weak authentication in Azure Key Vault allows an unauthorized attacker to bypass a security feature over a network.
Revision history
-
#1
Information published.
References
-
CVE-2026-85922 Azure Key Vault Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85922
-
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
-
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
-
Common Vulnerability Scoring System
https://www.first.org/cvss