CVE-2026-66803

CRITICAL

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

CVSS v3.1 Score

10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 7/30/2026Modified: 7/31/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-66803 — Improper access control in Azure Cosmos DB allows an unauthorized attacker to ex...

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

CVE-2026-66803
NIST NVD

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66803