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CVE-2026-87701Critical

Azure Cosmos DB Elevation of Privilege Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.

Severity
Critical
CVSS base score
9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
Impact
Elevation of Privilege
EPSS, next 30 days
0.8%Higher than 54.4% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Not assessed
Publicly disclosed
No
Customer action
Not required (service-side fix)
Component
Azure Cosmos DB
Weakness
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Issued by
Microsoft
Published
17 Sep 2026 · September 2026
Last revised
17 Sep 2026

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

Azure
1 affected product
  • Azure Cosmos DB
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