CVE-2026-44800

Windows Push Notifications Elevation of Privilege Vulnerability

HIGH 7.8

At a glance

Source: NVD
EPSS: EPSS 0.20 % · percentile 10 (2026-10-28)
State: PUBLISHED
Published: 2026-07-14 17:05 UTC
Updated: 2026-10-28 20:02 UTC
Assigner: microsoft
NVD status: Analyzed

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

Weaknesses (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization
CWE-416 — Use After Free

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44800

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

European references

ENISA EUVD · EUVD-2026-43791
GCVE · GCVE-0-2026-44800

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_11_23h2:*:*:*:*:*:*:arm64:* < 10.0.22631.7376
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* < 10.0.22631.7376
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:*:*:*:*:*:*:arm64:* < 10.0.28000.2269
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* < 10.0.28000.2269
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* < 10.0.26100.33158

Affected products

Product	Versions
Microsoft · Windows 11 version 23H2	affected 10.0.22631.0 < 10.0.22631.7376
Microsoft · Windows 11 Version 23H2	affected 10.0.22631.0 < 10.0.22631.7376
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 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