7.5

CVE-2026-40378

Medienbericht

Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability

Memory allocation with excessive size value in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1607 HwPlatform x64 Version < 10.0.14393.9339
Microsoft ≫ Windows 10 1607 HwPlatform x86 Version < 10.0.14393.9339
Microsoft ≫ Windows 10 1809 HwPlatform x64 Version < 10.0.17763.9020
Microsoft ≫ Windows 10 1809 HwPlatform x86 Version < 10.0.17763.9020
Microsoft ≫ Windows 10 21h2 HwPlatform arm64 Version < 10.0.19044.7548
Microsoft ≫ Windows 10 21h2 HwPlatform x64 Version < 10.0.19044.7548
Microsoft ≫ Windows 10 21h2 HwPlatform x86 Version < 10.0.19044.7548
Microsoft ≫ Windows 10 22h2 HwPlatform arm64 Version < 10.0.19045.7548
Microsoft ≫ Windows 10 22h2 HwPlatform x64 Version < 10.0.19045.7548
Microsoft ≫ Windows 10 22h2 HwPlatform x86 Version < 10.0.19045.7548
Microsoft ≫ Windows 11 23h2 HwPlatform arm64 Version < 10.0.22631.7376
Microsoft ≫ Windows 11 23h2 HwPlatform x64 Version < 10.0.22631.7376
Microsoft ≫ Windows 11 24h2 HwPlatform arm64 Version < 10.0.26100.8875
Microsoft ≫ Windows 11 24h2 HwPlatform x64 Version < 10.0.26100.8875
Microsoft ≫ Windows 11 25h2 HwPlatform arm64 Version < 10.0.26200.8875
Microsoft ≫ Windows 11 25h2 HwPlatform x64 Version < 10.0.26200.8875
Microsoft ≫ Windows 11 26h1 HwPlatform arm64 Version < 10.0.28000.2269
Microsoft ≫ Windows 11 26h1 HwPlatform x64 Version < 10.0.28000.2269
Microsoft ≫ Windows Server 2016 SwEdition - HwPlatform x64 Version < 10.0.14393.9339
Microsoft ≫ Windows Server 2019 SwEdition - HwPlatform x64 Version < 10.0.17763.9020
Microsoft ≫ Windows Server 2022 HwPlatform x64 Version < 10.0.20348.5386
Microsoft ≫ Windows Server 2025 HwPlatform x64 Version < 10.0.26100.33158
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.82% 0.53
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-789 Memory Allocation with Excessive Size Value

The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

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VulnDex Intel
Media Report
14.07.2026 20:08
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40378
Vendor Advisory