What is CVE-2017-8627?

CVE-2017-8627 is a medium-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.7/10. Published 2017-08-08.

How severe is CVE-2017-8627?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Buffer overflow in Microsoft Windows 10

CVE-2017-8627

Windows Subsystem for Linux in Windows 10 1703, allows a denial of service vulnerability due to the way it handles objects in memory, aka "Windows Subsystem for Linux Denial of Service Vulnerability".

Vulnerability class: Buffer Overflow

Published 2017-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Microsoft Windows 10 — versions 1703
Microsoft Corporation Windows Subsystem For Linux — versions Windows 10 1703

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-2017-8627 (Patch, Vendor Advisory)
www.securityfocus.com/bid/100065 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1039103 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-8627?: CVE-2017-8627 is a medium-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.7/10. Published 2017-08-08.
How severe is CVE-2017-8627?: Medium severity. CVSS v3 base score is 4.7 out of 10.