SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-11818

The Microsoft Windows Storage component on Microsoft Windows 8.1, Windows Server 2012 R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows a security feature bypass vulnerability when it fails to validate an…

MEDIUM 4.5EPSS 1.17%

Does this matter?

Lower severity and a low EPSS score (1.17%). Track it; it rarely justifies an emergency change on its own.

Description

The Microsoft Windows Storage component on Microsoft Windows 8.1, Windows Server 2012 R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows a security feature bypass vulnerability when it fails to validate an integrity-level check, aka "Windows Storage Security Feature Bypass Vulnerability".

CVSS 3.0
4.5 MEDIUMCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS
1.17% probability · 67th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-254
Affected
microsoft/windows 10 · microsoft/windows 8.1 · microsoft/windows rt 8.1 · microsoft/windows server 2012 · microsoft/windows server 2016
Source
secure@microsoft.com
EPSS trend
0%3%5%27 October 2026: 1.17%27 October 202627 October 2026

EPSS 1.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.