# CVE-2026-69300: Microsoft Windows Push Notifications privilege escalation

Source: https://junglewise.ai/threats/cve-2026-69300-microsoft-windows-push-notifications-privilege-escalation  
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-2026-69300 · Severity: high · CVSS 7 · Published 2026-09-08

Windows Push Notifications is a system service used to deliver notifications to users on Windows devices. A use-after-free vulnerability in this service allows an authenticated local attacker to execute code with elevated privileges, potentially gaining administrative control of the system.

Technologies: [Microsoft Windows Push Notifications](https://junglewise.ai/threats/technologies/windows-push-notifications). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69300 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69300 being exploited in the wild.

**How severe is CVE-2026-69300?** High severity, with a CVSS score of 7, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows Push Notifications.

**Is there a fix for CVE-2026-69300?** 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-2026-69300 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-69300?** Check whether you run Microsoft Windows Push Notifications. 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 use-after-free vulnerability exists in the Windows Push Notifications service. An authenticated local attacker can trigger the vulnerability through a malicious action, causing the service to reference memory that has already been freed. This memory corruption flaw can be leveraged to achieve arbitrary code execution with elevated privileges on the affected system. The vulnerability requires local access and prior authentication to exploit.

## Affected products

- Microsoft Windows Push Notifications

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69300](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69300)

## Related threats

- [Microsoft Windows Push Notifications use after free privilege escalation](https://junglewise.ai/threats/cve-2026-70198-use-after-free-in-windows-push-notifications-allows-an-authorized)
- [Microsoft Windows Push Notifications privilege escalation via race condition](https://junglewise.ai/threats/cve-2026-42991-microsoft-windows-push-notifications-privilege-escalation-via)
- [Microsoft Windows Push Notifications race condition privilege escalation](https://junglewise.ai/threats/cve-2026-42979-microsoft-windows-push-notifications-race-condition-privilege)
- [Microsoft Windows Push Notifications race condition privilege escalation](https://junglewise.ai/threats/cve-2026-42977-microsoft-windows-push-notifications-race-condition-privilege)
- [Microsoft Windows Push Notifications information disclosure](https://junglewise.ai/threats/cve-2026-42971-microsoft-windows-push-notifications-information-disclosure)