CVE-2026-45657

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 15.48%
EPSS Percentile: 96.80%
CISA KEV: Not listed

Description

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 10-Jun-2026 00:17
Last Modified: 23-Jul-2026 15:10
EPSS Date: 2026-10-30
CWE: CWE-122, CWE-416

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

microsoft / windows_11_23h2
Version / affected range: * · before (exclusive) 10.0.22631.7219
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
microsoft / windows_11_23h2
Version / affected range: * · before (exclusive) 10.0.22631.7219
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
microsoft / windows_11_24h2
Version / affected range: * · before (exclusive) 10.0.26100.8655
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
microsoft / windows_11_24h2
Version / affected range: * · before (exclusive) 10.0.26100.8655
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
microsoft / windows_11_25h2
Version / affected range: * · before (exclusive) 10.0.26200.8655
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
microsoft / windows_11_25h2
Version / affected range: * · before (exclusive) 10.0.26200.8655
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
microsoft / windows_11_26h1
Version / affected range: * · before (exclusive) 10.0.28000.2269
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
microsoft / windows_11_26h1
Version / affected range: * · before (exclusive) 10.0.28000.2269
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
microsoft / windows_server_2022
Version / affected range: * · before (exclusive) 10.0.20348.5256
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
microsoft / windows_server_2025
Version / affected range: * · before (exclusive) 10.0.26100.32995
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*

References

[email protected]

Last enrichment sync: 31-Oct-2026 17:40
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

#Microsoft Microsoft’s June Patch Tuesday Fixes 206 CVEs, Including Actively Exploited Defender Bug

CVE (2)

People (2)

Vendors (1)

Products (3)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.