CVE-2026-62772
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk16th percentile - higher than 16% of all known CVEs
Summary
Heap-based buffer overflow in the Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with limited privileges could gain full control of the system, compromising confidentiality, integrity, and availability.
Recommendation
Apply the latest Windows security updates to remediate this vulnerability.
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-2026-62775Medium
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information 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)
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS