# CVE-2026-69349: Microsoft Windows Management Instrumentation information disclosure

Source: https://junglewise.ai/threats/cve-2026-69349-microsoft-windows-management-instrumentation-information  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-69349 · Severity: medium · CVSS 5.7 · Published 2026-09-08

Windows Management Instrumentation (WMI) is a core Windows component that allows administrators and applications to manage and monitor system resources. This vulnerability allows an authorized attacker to read uninitialized memory through WMI, potentially exposing sensitive system information such as credentials, keys, or other data that may have been left in memory by other processes.

Technologies: [Microsoft Windows Management Instrumentation](https://junglewise.ai/threats/technologies/windows-management-instrumentation). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69349 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69349 being exploited in the wild.

**How severe is CVE-2026-69349?** Medium severity, with a CVSS score of 5.7, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows Management Instrumentation.

**Is there a fix for CVE-2026-69349?** 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-2026-69349 attacked?** It is attacked over the network or from the adjacent network.

**Am I affected by CVE-2026-69349?** Check whether you run Microsoft Windows Management Instrumentation. 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

This vulnerability involves the use of uninitialized memory in Windows Management Instrumentation, a classic information disclosure issue. An authorized attacker with local network access to WMI can craft requests that cause uninitialized data structures to be returned, leading to information disclosure. The attack requires existing credentials or authorization to access WMI services. The vulnerability allows an attacker to read sensitive data from memory without code execution or privilege escalation capabilities. Microsoft has released security updates to properly initialize memory structures before use.

## Affected products

- Microsoft Windows Management Instrumentation

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69349](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69349)

## Related threats

- [Windows Management Instrumentation out-of-bounds read](https://junglewise.ai/threats/cve-2026-112814-out-of-bounds-read-in-windows-management-instrumentation-allows)
- [Microsoft Windows Management Instrumentation heap buffer overflow](https://junglewise.ai/threats/cve-2026-105503-heap-based-buffer-overflow-in-windows-management-instrumentation)
- [Microsoft Windows Management Instrumentation out-of-bounds read](https://junglewise.ai/threats/cve-2026-85852-out-of-bounds-read-in-windows-management-instrumentation-allows)
- [Microsoft Windows Management Instrumentation use-after-free privilege escalation](https://junglewise.ai/threats/cve-2026-77905-microsoft-windows-management-instrumentation-use-after-free)