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Vulnerability record · CVE-2017-8602 · published 11 July 2017

CVE-2017-8602: Microsoft edge improper input validation vulnerability

Microsoft · Edge

Microsoft browsers on Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow a spoofing vulnerability in the way they parse HTTP content, aka "Microsoft Browser Spoofing Vulnerability."

6.5 CVSS 3.0 Medium EPSS 5.3% · top 7.7% CWE-20 · Improper input validation
6.5CVSS 3.0 base score, v2 4.3
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Microsoft browsers on Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow a spoofing vulnerability in the way they parse HTTP content, aka "Microsoft Browser Spoofing Vulnerability."

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/99390 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038859 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038860 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8602 PatchVendor Advisory
http://www.securityfocus.com/bid/99390 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038859 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038860 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8602 PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-8602), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.