CVE-2025-64675: Azure Cosmos DB Spoofing Vulnerability

Overview

Severity
High (CVSS 8.3)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Category
Spoofing
Exploit Status
Not Exploited
Patch Tuesday
2025-Dec
Released
2025-12-18
EPSS Score
0.05% (percentile: 15.5%)

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Azure Cosmos DB allows an unauthorized attacker to perform spoofing over a network.

FAQ

Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability? This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

Affected Products (1)

Azure

  • Azure Cosmos DB

Acknowledgments

Jianyang Song

Revision History

  • 2025-12-18: Information published.