CVE-2026-66803

Azure Cosmos DB Remote Code Execution Vulnerability

Published Jul 30, 2026 CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Description
Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
Title Azure Cosmos DB Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft cosmos Db
Weaknesses CWE-284
CPEs cpe:2.3:a:microsoft:cosmos_db:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft cosmos Db
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 10:41 PM
Reserved
Jul 27, 2026, 7:02 PM
Status
Analyzed
Published
Jul 30, 2026, 9:18 PM
Modified
Oct 23, 2026, 10:10 PM