PT-2026-47904 · Microsoft · Windows Push Notifications Apps+1

CVE-2026-42978 · Published 2026-06-09 · Updated 2026-07-16

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows Push Notifications (affected versions not specified)

Description A race condition occurs in Windows Push Notifications due to improper synchronization when using a shared resource. This allows an authorized attacker to elevate privileges locally on the system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-416

Related Identifiers

BDU:2026-08249

CVE-2026-42978

Affected Products

Windows

Windows Push Notifications Apps

References · 9

• https://safe-surf.ru/specialists/bulletins-nkcki/733273 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42978 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-08249 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42978 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42978 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42978 · Security Note
• https://twitter.com/ptdbugs/status/2069676647767327051 · Twitter Post
• https://twitter.com/lyrie_ai/status/2077562875523072244 · Twitter Post
• https://twitter.com/lyrie_ai/status/2077562874390618336 · Twitter Post