Vulnerability details

CVE-2026-83938

Microsoft Azure Kubernetes Configuration Service

Azure Kubernetes Configuration Service Elevation of Privilege Vulnerability

CVSS 3.1

10.0Critical

Official description

Missing authentication for critical function in Azure Kubernetes Configuration Service allows an unauthorized attacker to elevate privileges over a network.

CVSS scores

Score	Version	Source	Vector
10.0Critical	3.1	CVEProject cvelistV5 (CNA) (microsoft)	`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`

Affected products

Vendor	Product	Versions	Source
Microsoft	Azure Kubernetes Configuration Service	All	CVEProject cvelistV5 (CNA)

References and advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83938 vendor-advisorypatch

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Details

Published: 2026-10-23
Last updated: 2026-10-31
State: Published
Assigner (CNA): microsoft
Kolun priority: 38 · Medium

Exploit prediction (EPSS)

0.7%

Probability of exploitation in 30 days

53.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-306
Missing Authentication for Critical Function