CVE-2017-8602 — Microsoft browsers on Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windo

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

01What is this vulnerability?

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."

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-07-11T21:29:02.077
• Last modified: 2026-05-13T00:24:29.033

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/99390
• www.securitytracker.com — http://www.securitytracker.com/id/1038859
• www.securitytracker.com — http://www.securitytracker.com/id/1038860
• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8602
• www.securityfocus.com — http://www.securityfocus.com/bid/99390
• www.securitytracker.com — http://www.securitytracker.com/id/1038859
• www.securitytracker.com — http://www.securitytracker.com/id/1038860
• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8602