Skip to main content

Severity by source

Vendor (microsoft) PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CIRCL (temporal)
4.8 MEDIUM
cvss
vuln.today AI
5.5 MEDIUM

Local session with low privileges required; scope unchanged; only confidentiality impacted with no integrity or availability effect.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Jul 22, 2026 - 17:29 vuln.today
CVE Published
Jul 14, 2026 - 17:06 nvd
MEDIUM 5.5

DescriptionCVE.org

Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally.

AnalysisAI

Sensitive information disclosure in Windows Push Notifications (WPN) permits a locally authenticated, low-privileged attacker to read confidential data they are not authorized to access. Affected systems span Windows 10 (1809 through 22H2), Windows 11 (24H2 through 26H1), Windows Server 2019, 2022, and 2025, covering a broad enterprise and consumer footprint. No public exploit identified at time of analysis, EPSS sits at 0.36% (28th percentile), and CISA SSVC rates exploitation as none with non-automatable attack paths.

Technical ContextAI

Windows Push Notifications (WPN) is an OS-level service on Windows that manages delivery of application and system notifications. The root cause is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), indicating the WPN subsystem fails to enforce proper access controls on sensitive data it handles or exposes through its API or inter-process communication surface. Because the attack vector is local (AV:L) and requires only low privileges (PR:L), the flaw likely resides in a named pipe, shared memory segment, registry key, notification content store, or IPC mechanism accessible to standard user accounts. Affected CPEs span cpe:2.3:a:microsoft:windows_10_version_1809 through cpe:2.3:a:microsoft:windows_server_2025, indicating the vulnerable WPN code is shared across the modern Windows codebase dating at least to the 1809 release.

RemediationAI

The primary fix is applying the vendor-released patch via Windows Update or WSUS targeting the build versions listed in the EUVD data: Windows 10 1809 and Server 2019 should reach 10.0.17763.9020 or later; Windows 10 21H2 should reach 10.0.19044.7548; Windows 10 22H2 should reach 10.0.19045.7548; Windows 11 24H2 should reach 10.0.26100.8875; Windows 11 25H2 should reach 10.0.26200.8875; Windows 11 26H1 should reach 10.0.28000.2269; Windows Server 2022 should reach 10.0.20348.5386; and Windows Server 2025 should reach 10.0.26100.33158. The Microsoft MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50339 is the authoritative source for patch details. As a compensating control in environments where immediate patching is not possible, restricting interactive local logon rights to only trusted administrative accounts reduces the attacker pool, though this may impact legitimate user workflows. Disabling or restricting WPN via Group Policy (Computer Configuration > Administrative Templates > Start Menu and Taskbar > Notifications) would prevent notifications from functioning but eliminates the WPN attack surface entirely on sensitive server workloads where notifications are not operationally required.

CVE-2026-33824 CRITICAL POC
9.8 Apr 14

Remote code execution in Windows IKE Extension (Internet Key Exchange) via double free memory corruption allows unauthen

CVE-2026-56155 HIGH POC
7.8 Jul 14

Local privilege escalation in Microsoft Active Directory Federation Services (AD FS) lets an already-authenticated low-p

CVE-2026-32202 MEDIUM POC
4.3 Apr 14

Windows Shell protection mechanism failure (CVE-2026-32202) allows remote attackers to perform spoofing attacks over a n

CVE-2026-49798 CRITICAL POC
9.3 Jul 14

Local privilege escalation in the Microsoft Windows Kernel allows an unauthorized attacker to gain elevated (SYSTEM-leve

CVE-2026-49795 HIGH POC
8.8 Jul 14

Local privilege escalation in the Windows Kernel lets an already-authenticated attacker corrupt kernel memory via a use-

CVE-2026-54128 HIGH POC
8.4 Jul 14

Local code execution in the Windows DHCP Client service stems from a use-after-free (CWE-416) memory-corruption flaw aff

CVE-2026-50518 CRITICAL
9.8 Jul 14

Remote code execution in the Microsoft Windows DHCP Server role allows an unauthenticated network attacker to run arbitr

CVE-2026-50655 HIGH POC
7.8 Jul 14

Local code execution in the Windows Media component of supported Windows 10, Windows 11, and Windows Server (2016 throug

CVE-2026-54992 HIGH POC
7.8 Jul 14

Local privilege escalation via heap-based buffer overflow in the Windows Message Queuing (MSMQ) Queue Manager component

CVE-2026-50489 HIGH POC
7.8 Jul 14

Local privilege escalation in Microsoft Windows Win32K lets an authenticated low-privileged user corrupt kernel heap mem

CVE-2026-50667 HIGH POC
7.0 Jul 14

Local privilege escalation in the Windows NTFS file system driver lets an authenticated low-privileged user win a race c

CVE-2026-57092 CRITICAL
9.9 Jul 14

Elevation of privilege in the Windows Hyper-V virtual network switch (VMSwitch) lets an authenticated attacker operating

Share

CVE-2026-50339 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy