CVE-2026-62796
Windows NTFS Information Disclosure Vulnerability
Description
Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.
In plain language
AI Act nowCVE-2026-62796 is a Windows file-system bug where a local user can read sensitive information they shouldn’t be able to access; if your business has strict user access and you don’t allow untrusted people to log on to these machines, the risk is limited, but this is still a RED issue to patch.
CVE-2026-62796 is a local information disclosure weakness (CWE-125) in Windows NTFS that allows an authorized user to trigger an out-of-bounds read in file-system handling to disclose sensitive data from memory; it does not require internet access, but it does require local user privileges.
What to do now
- Check which of these systems you run: Windows 10, Windows 11, or any listed Windows Server version, and verify whether they have the Microsoft updates that include CVE-2026-62796.
- On each affected system, update to the fixed version that matches your build:
- Windows 10 fixed versions: 10.0.14393.9418, 10.0.17763.9121, 10.0.19044.7663, or 10.0.19045.7663.
- Windows 11 fixed versions: 10.0.22631.7517, 10.0.26100.9168, 10.0.26200.9168, or 10.0.28000.2704.
- Windows Server fixed versions: 2012 → 6.2.9200.26280, 2012 R2 → 6.3.9600.23338, 2016 → 10.0.14393.9418.
- If you cannot update immediately, reduce the chance of untrusted local logons (lock down local accounts, remove unused accounts, and ensure only trusted staff can sign in to these machines).
CVSS Vector Breakdown
AV:LAttack VectorAC:LAttack ComplexityPR:LPrivileges RequiredUI:NUser InteractionS:UScopeC:HConfidentialityI:NIntegrityA:NAvailabilityWeaknesses
Affected Products
Exploitability
Attack Graph
Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.
MITRE ATT&CK
1 techniqueReferences
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