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CVE-2026-45657
MSR
Critical

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

CVSS
9.8
Critical
EPSS
0.01
p42
Published
2026-01-01
Updated
2026-01-01
Description

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

Tags · CWE
Pre-auth
CWE-122
CAPEC-92
Affected products
Windows_11_23h2 < 10.0.22631.7219Windows_11_24h2 < 10.0.26100.8655Windows_11_25h2 < 10.0.26200.8655Windows_11_26h1 < 10.0.28000.2269Windows_server_2022 < 10.0.20348.5256Windows_server_2025 < 10.0.26100.32995
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.006 · p42
Known exploited (KEV)
No
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
windows_11_23h2*Tracked
windows_11_24h2*Tracked
windows_11_25h2*Tracked
windows_11_26h1*Tracked
windows_server_2022*Tracked
windows_server_2025*Tracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
Source databases
MSR
CVE
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