# CVE-2026-70198: Microsoft Windows Push Notifications use after free privilege escalation

Source: https://junglewise.ai/threats/cve-2026-70198-use-after-free-in-windows-push-notifications-allows-an-authorized  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-70198 · Severity: high · CVSS 7 · Published 2026-10-13

Windows Push Notifications, a core component of Windows that delivers notifications to users and applications, contains a use-after-free vulnerability. An authorized attacker with local access could exploit this flaw to gain elevated privileges on the system, potentially leading to full system compromise.

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-2026-70198 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-70198 being exploited in the wild.

**How severe is CVE-2026-70198?** High severity, with a CVSS score of 7, published 13 October 2026.

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

**Is there a fix for CVE-2026-70198?** 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-2026-70198 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-70198?** 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 Windows Push Notifications that can be exploited by an authenticated local attacker to escalate privileges. The flaw arises from improper memory management when handling notification objects. Successful exploitation grants the attacker elevated system privileges.

## Affected products

- Microsoft Windows Push Notifications

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70198](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70198)

## Related threats

- [Microsoft Windows Push Notifications privilege escalation](https://junglewise.ai/threats/cve-2026-69300-microsoft-windows-push-notifications-privilege-escalation)
- [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)