CVE-2026-83854: Windows Notification Information Disclosure Vulnerability
Improper access control in Windows Notification allows an authorized attacker to disclose information locally.
Other sources
Windows Notification Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657
Event History
Frequently Asked Questions
Who is exposed to this issue?
Systems running the listed Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, or Windows Server 2025 products may be affected. Exploitation is local rather than network-based.
What does an attacker need to exploit it?
An attacker must already be authorized on the affected system and have local access. No user interaction is required according to the supplied vector.
What is the likely impact if exploited?
Successful exploitation can disclose information. The supplied severity vector indicates high confidentiality impact, with no integrity or availability impact.