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CVE-2026-62796

Windows NTFS Information Disclosure Vulnerability

Published: Aug 11, 2026Updated: Aug 16, 2026 Sources: CVE List NVDCWE-125

Description

Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.

In plain language

AI Act now

CVE-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.

Executive summary

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.

If affected, business impact
Sensitive data exposurePrivate documents leakageCredentials or secrets exposureCompliance and privacy risk

What to do now

  1. 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.
  2. On each affected system, update to the fixed version that matches your build:
  3. Windows 10 fixed versions: 10.0.14393.9418, 10.0.17763.9121, 10.0.19044.7663, or 10.0.19045.7663.
  4. Windows 11 fixed versions: 10.0.22631.7517, 10.0.26100.9168, 10.0.26200.9168, or 10.0.28000.2704.
  5. Windows Server fixed versions: 2012 → 6.2.9200.26280, 2012 R2 → 6.3.9600.23338, 2016 → 10.0.14393.9418.
  6. 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).
Patch / advisory Usually a quick update

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

Affected Products

and 25 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

2

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