VulnerabilityAnalyzed
CVE-2026-66803
Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
CRITICAL 10.0EPSS 0.55%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
- CVSS 3.1
- 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.55% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- microsoft/azure cosmos db
- Source
- secure@microsoft.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.