CVE-2026-66803

CRITICAL CVSS 3.1: 10.0
Updated Jul 31, 2026
Microsoft
Parameter Value
CVSS 10.0 (CRITICAL)
Affected Versions from -
Type CWE-284 (Improper Access Control)
Vendor Microsoft
Public PoC No

Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Microsoft Cosmos_Db
cpe:2.3:a:microsoft:cosmos_db:*:*:*:*:*:*:*:*
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