CVE-2026-50434

Windows Push Notification Information Disclosure Vulnerability

MEDIUM 5.5

At a glance

Source: NVD
EPSS: EPSS 0.48 % · percentile 41 (2026-10-28)
State: PUBLISHED
Published: 2026-07-14 17:06 UTC
Updated: 2026-10-28 20:03 UTC
Assigner: microsoft
NVD status: Analyzed

Description

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

Weaknesses (CWE)

CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50434

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	NVD · secure@microsoft.com (Secondary)

European references

ENISA EUVD · EUVD-2026-43883
GCVE · GCVE-0-2026-50434

CERT-FR advisories

CERTFR-2026-AVI-0869 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* < 10.0.19044.7548
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* < 10.0.19044.7548
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* < 10.0.19044.7548
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* < 10.0.19045.7548
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* < 10.0.19045.7548
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* < 10.0.19045.7548
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* < 10.0.26100.8875
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* < 10.0.26100.8875
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* < 10.0.26200.8875
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* < 10.0.26200.8875
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* < 10.0.28000.2269
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* < 10.0.28000.2525
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.5386
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.33158

Affected products

Product	Versions
Microsoft · Windows 10 Version 21H2	affected 10.0.19044.0 < 10.0.19044.7548
Microsoft · Windows 10 Version 22H2	affected 10.0.19045.0 < 10.0.19045.7548
Microsoft · Windows 11 Version 24H2	affected 10.0.26100.0 < 10.0.26100.8875
Microsoft · Windows 11 Version 25H2	affected 10.0.26200.0 < 10.0.26200.8875
Microsoft · Windows 11 version 26H1	affected 10.0.28000.0 < 10.0.28000.2525
Microsoft · Windows Server 2022	affected 10.0.20348.0 < 10.0.20348.5386
Microsoft · Windows Server 2025	affected 10.0.26100.0 < 10.0.26100.33158
Microsoft · Windows Server 2025 (Server Core installation)	affected 10.0.26100.0 < 10.0.26100.33158

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD