Quick answers
- Is CVE-2026-83938 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83938 being exploited in the wild.
- How severe is CVE-2026-83938?
- Critical severity, with a CVSS score of 10, published 22 October 2026.
- Which products and versions are affected?
- Microsoft Azure Kubernetes Configuration Service.
- Is there a fix for CVE-2026-83938?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-83938 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-83938?
- Check whether you run Microsoft Azure Kubernetes Configuration Service. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A critical function in Azure Kubernetes Configuration Service lacks authentication checks, allowing unauthenticated network-based privilege escalation. An attacker can reach this function directly over the network without providing credentials and escalate their privileges to an administrator or system level. The vulnerability has a CVSS score of 10.0 indicating maximum severity with complete confidentiality, integrity, and availability impact.
Affected products
- Microsoft Azure Kubernetes Configuration Service
Timeline
- 2026-10-22: disclosed