No exploitation reportedFix available

CVE-2026-88143

Q: Is CVE-2026-88143 actively exploited?

Active exploitation of CVE-2026-88143 has not been confirmed. Its EPSS score was 0.3% on 2026-10-26, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-88143?

CVE-2026-88143 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Windows Storage Spaces Controller Elevation of Privilege Vulnerability

No exploitation reported by the sources we read.

Published2026-10-13
Fixed in10.0.14393.9612
WeaknessCWE-122 · CWE-191

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

Timeline

dates in UTC

2026-10-1319:21CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-29 09:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-88143?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-88143?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Microsoft windows 10 1607

Branch	Affected	Fixed in	Source
10.0	< 10.0.14393.9612	10.0.14393.9612	NVD

Microsoft windows 10 1809

Branch	Affected	Fixed in	Source
10.0	< 10.0.17763.9376	10.0.17763.9376	NVD

Microsoft windows 10 21h2

Branch	Affected	Fixed in	Source
10.0	< 10.0.19044.7807	10.0.19044.7807	NVD

10 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Microsoft windows 10 1607 to 10.0.14393.9612

Advisories and patches

msrc.microsoft.comVendor Advisory · Patch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-10-13
OpenCVESSVC decisionnone—
CNACVSS 3.16.7read 2026-10-29
NVDCVSS 3.17.8read 2026-10-29
CNAweakness (CWE)CWE-122, CWE-191read 2026-10-29
FIRST EPSSEPSS score0.3 %2026-10-26

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2026-10-13
Last Modified: 2026-10-28
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-88143?

Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

Is CVE-2026-88143 actively exploited?

Active exploitation of CVE-2026-88143 has not been confirmed. Its EPSS score was 0.3% on 2026-10-26, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-88143?

CVE-2026-88143 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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