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CVE-20XX-?

CVE-2026-50428

7.1 HIGH 0.4% exploit odds Fix listed Memory safety OS & kernel

What it is

Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

At a glance

Exploitability: Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, service disruption.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-07-14 18:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-24 21:10 UTC Last updatedMost recent change to the record

Details

Published: 2026-07-14 18:17 UTC
Last modified: 2026-10-24 21:10 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-125 · Out-of-bounds read
Record status: Analyzed

Affected

Microsoft Windows 11 26h1 < 10.0.28000.2269
Microsoft Windows 11 26h1 < 10.0.28000.2525

Attack profile CVSS 3.1 · 7.1

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Meme: I wake up, CVE-2026-50428

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Fix and advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50428

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50428

NVD record · CVE.org record