CVE-2026-62775
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
Risk Assessment
Incorrect authorization could allow an authenticated user to access data they should not have permission to, compromising confidentiality.
Recommendation
Apply security updates and verify permission configurations in container environments.
Other vulnerabilities in Windows Container Isolation FS Filter Driver
See all- CVE-2026-97810High
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
- CVE-2026-97794High
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
- CVE-2026-97792High
Improper access control in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
- CVE-2026-97787High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
- CVE-2026-72971Medium
Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.
- CVE-2026-62772High
Heap-based buffer overflow in the Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
- CVE-2026-50428High
Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
- CVE-2026-33098High
Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2021-34461High
Vulnerability in Windows Container Isolation FS Filter Driver allows elevation of privilege. An attacker could exploit this flaw to gain higher privileges on the system.
Original NVD description (English source)
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS