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CVE-2026-66803 Details
Description
Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
A remote code execution vulnerability has been identified in Microsoft Azure Cosmos DB. This issue arises from improper access control, which allows an unauthorized attacker to execute code over a network. The vulnerability affects all versions of Azure Cosmos DB.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 30, 2026Exploitation: NoneAutomatable: YesTechnical Impact: Total
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66803 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft azure cosmos db | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 4, 2026 | Initial Analysis | [email protected] |
| Aug 4, 2026 | CVE Modified | [email protected] |
| Jul 31, 2026 | CVE Modified | CISA-ADP |
| Jul 30, 2026 | CVE Modified | CISA-ADP |
| Jul 30, 2026 | New CVE Received | [email protected] |