CVE-2026-33098

CWE-416 — Use After Free3 documents3 sources
Severity
7.8HIGH
EPSS
No EPSS data
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
16
Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 21h2+13 more
Timeline
PublishedApr 14

Description

Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages16 packages

▶CVEListV5microsoft/windows_server_201610.0.14393.0 — 10.0.14393.9060
▶CVEListV5microsoft/windows_server_201910.0.17763.0 — 10.0.17763.8644
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.5020
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32690
▶CVEListV5microsoft/windows_10_version_160710.0.14393.0 — 10.0.14393.9060

🔴Vulnerability Details

2
CVEList
Windows Container Isolation FS Filter Driver Elevation of Privilege Vulnerability↗2026-04-14
▶
VulDB
Microsoft Windows up to Server 2025 Container Isolation FS Filter Driver use after free↗2026-04-14
▶
CVE-2026-33098 (HIGH CVSS 7.8) | Use after free in Windows Container | cvebase.io