7.5

CVE-2026-56648

Windows NFS Server Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorized attacker to elevate privileges over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1607 HwPlatformx64 Version < 10.0.14393.9339
Microsoft ≫ Windows 10 1607 HwPlatformx86 Version < 10.0.14393.9339
Microsoft ≫ Windows 10 1809 HwPlatformx64 Version < 10.0.17763.9020
Microsoft ≫ Windows 10 1809 HwPlatformx86 Version < 10.0.17763.9020
Microsoft ≫ Windows 10 21h2 HwPlatformarm64 Version < 10.0.19044.7548
Microsoft ≫ Windows 10 21h2 HwPlatformx64 Version < 10.0.19044.7548
Microsoft ≫ Windows 10 21h2 HwPlatformx86 Version < 10.0.19044.7548
Microsoft ≫ Windows 10 22h2 HwPlatformarm64 Version < 10.0.19045.7548
Microsoft ≫ Windows 10 22h2 HwPlatformx64 Version < 10.0.19045.7548
Microsoft ≫ Windows 10 22h2 HwPlatformx86 Version < 10.0.19045.7548
Microsoft ≫ Windows 11 24h2 HwPlatformarm64 Version < 10.0.26100.8875
Microsoft ≫ Windows 11 24h2 HwPlatformx64 Version < 10.0.26100.8875
Microsoft ≫ Windows 11 25h2 HwPlatformarm64 Version < 10.0.26200.8875
Microsoft ≫ Windows 11 25h2 HwPlatformx64 Version < 10.0.26200.8875
Microsoft ≫ Windows 11 26h1 HwPlatformarm64 Version < 10.0.28000.2269
Microsoft ≫ Windows 11 26h1 HwPlatformx64 Version < 10.0.28000.2269
Microsoft ≫ Windows Server 2016 SwEdition- HwPlatformx64 Version < 10.0.14393.9339
Microsoft ≫ Windows Server 2019 SwEdition- HwPlatformx64 Version < 10.0.17763.9020
Microsoft ≫ Windows Server 2022 HwPlatformx64 Version < 10.0.20348.5386
Microsoft ≫ Windows Server 2025 HwPlatformx64 Version < 10.0.26100.33158
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.47% 0.379
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.5 1.6 5.9
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56648
Patch
Vendor Advisory