What is CVE-2017-8727?

CVE-2017-8727 is a high-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-10-13.

How severe is CVE-2017-8727?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Microsoft Windows 10

CVE-2017-8727

Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow an attacker to execute arbitrary code in the context of the current user, due to how Microsoft Windows Text Services Framework handles objects in memory, aka "Windows Shell Memory Corruption Vulnerability".

Vulnerability class: Buffer Overflow

Published 2017-10-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.083 (94.8th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.083 · newest: 0.083 · 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 Text Services Framework — versions Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016.

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8727 (Patch, Vendor Advisory)
www.securitytracker.com/id/1039537 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/101142 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-8727?: CVE-2017-8727 is a high-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-10-13.
How severe is CVE-2017-8727?: High severity. CVSS v3 base score is 7.5 out of 10.