by Kastro
Paper/Archive/CVE-2026-68839

CVE-2026-68839

Microsoft Windows 10 Version 1607 — Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability

EPSS 1%CVSS 9.8
critical.is priorityof 100
42
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 63.4.634 × 2012.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Heap-based buffer overflow in Windows USB Mass Storage Class Driver allows an unauthorized attacker to execute code over a network.

Affected

ProductAffectedFixed inSource
Windows 10 Version 160710.0.14393.0 – < 10.0.14393.951210.0.14393.9512CNA
Windows 10 Version 180910.0.17763.0 – < 10.0.17763.924510.0.17763.9245CNA
Windows 10 Version 21H210.0.19044.0 – < 10.0.19044.772510.0.19044.7725CNA
Windows 10 Version 22H210.0.19045.0 – < 10.0.19045.772510.0.19045.7725CNA
Windows 11 version 23H210.0.22631.0 – < 10.0.22631.758210.0.22631.7582CNA
Windows 11 Version 23H210.0.22631.0 – < 10.0.22631.758210.0.22631.7582CNA
Windows 11 Version 24H210.0.26100.0 – < 10.0.26100.944510.0.26100.9445CNA
Windows 11 Version 25H210.0.26200.0 – < 10.0.26200.944510.0.26200.9445CNA
Windows 11 version 26H110.0.28000.0 – < 10.0.28000.295410.0.28000.2954CNA
Windows Server 20126.2.9200.0 – < 6.2.9200.263496.2.9200.26349CNA
Windows Server 2012 (Server Core installation)6.2.9200.0 – < 6.2.9200.263496.2.9200.26349CNA
Windows Server 2012 R26.3.9600.0 – < 6.3.9600.233986.3.9600.23398CNA

Scores by source

microsoft (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-68839