# CVE-2026-42969: Microsoft Windows Push Notifications information disclosure

Source: https://junglewise.ai/threats/cve-2026-42969-microsoft-windows-push-notifications-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-42969 · Severity: medium · CVSS 5.5 · Published 2026-06-09

A security vulnerability exists in the Windows Push Notification service, which manages real-time alerts and updates for applications. An authorized user on a system could exploit this flaw to access sensitive information that should otherwise be protected. This could lead to the exposure of private data or system details to unauthorized individuals already logged into the machine.

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-2026-42969 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42969 being exploited in the wild.

**How severe is CVE-2026-42969?** Medium severity, with a CVSS score of 5.5, published 9 June 2026.

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

**Is there a fix for CVE-2026-42969?** 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-2026-42969 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-42969?** 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 vulnerability classified as CWE-908 (Use of Uninitialized Resource) exists within the Windows Push Notifications component. The flaw occurs when the system fails to properly initialize a resource before it is accessed, potentially leaving sensitive data from previous operations in memory. An attacker with local access and low-level privileges can exploit this to disclose information from the system's memory. The attack requires no user interaction and has a high impact on confidentiality, though it does not directly allow for data modification or service disruption. Microsoft has released security updates to address this issue.

## Affected products

- Microsoft Windows Push Notifications

## Timeline

- 2026-06-09: disclosed
- 2026-06-09: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42969](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42969)

## 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](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)