What is CVE-2017-8589?

CVE-2017-8589 is a critical-severity vulnerability in Microsoft Windows 10, classified under Improper Preservation of Permissions. CVSS score: 9.8/10. Published 2017-07-11.

How severe is CVE-2017-8589?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-8589 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft Windows 10

CVE-2017-8589

Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability due to the way that Windows Search handles objects in memory, aka "Windows Search Remote Code Execution Vulnerability".

Published 2017-07-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.262 (97.9th percentile), scored 2026-10-01.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.262 · newest: 0.262 · change: 0.000

Affected products

Microsoft Windows 10 — versions 1511, 1607, 1703
Microsoft Windows 7
Microsoft Windows 8.1
Microsoft Windows Rt 8.1
Microsoft Windows Server 2008 — versions r2
Microsoft Windows Server 2012 — versions r2
Microsoft Windows Server 2016
Microsoft Corporation Windows 7 Sp1, Server 2008 Sp2 And R2 8.1 Rt 8.1, 2012 R2, 10 Gold, 1511, 1607, 1703, 2016. — versions Microsoft Windows

Weakness classification (CWE)

CWE-281 — Improper Preservation of Permissions

Public proof-of-concept exploits

References

www.securitytracker.com/id/1038866 (VDB Entry, Third Party Advisory, vdb-entry)
portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8589 (Patch, Vendor Advisory)
www.securityfocus.com/bid/99425 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-8589?: CVE-2017-8589 is a critical-severity vulnerability in Microsoft Windows 10, classified under Improper Preservation of Permissions. CVSS score: 9.8/10. Published 2017-07-11.
How severe is CVE-2017-8589?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-8589 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.