Executive brief
Windows NTFS, the core file system used by Windows, contains an out-of-bounds memory read vulnerability that an authenticated network user can exploit to gain elevated system privileges. An attacker with valid credentials on a network-connected system could leverage this flaw to escalate from a standard user account to administrative access, potentially enabling further compromise of the system.
Technical details
An out-of-bounds read vulnerability exists in the Windows NTFS file system driver, allowing an authenticated attacker to read memory beyond allocated boundaries. The vulnerability can be triggered over the network by an authorized user with valid credentials. Successful exploitation enables privilege escalation from a standard user context to system/administrator level. The attack requires network access and valid authentication credentials. Microsoft has issued security updates to remediate this vulnerability.
Affected products
- Microsoft Windows NTFS
Timeline
- 2026-09-08: disclosed