Microsoft browsers in Microsoft Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an allow an attacker to execute arbitrary code in the context of the current user when the JavaScript engines fail to render when handling objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8517 and CVE-2017-8524.
CVE-2017-8522
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 8%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 94.2%
- KEV
- Not listed
Published
June 15, 2017
Last Modified
May 13, 2026
References (6)
- secure@microsofthttp://www.securityfocus.com/bid/98926
- secure@microsofthttp://www.securitytracker.com/id/1038673
- secure@microsofthttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8522
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/98926
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1038673
- af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8522
Frequently asked(5)
What is CVE-2017-8522?
CVE-2017-8522 is a high vulnerability published on June 15, 2017. Microsoft browsers in Microsoft Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an allow an attacker to execute arbitrary code in the context of the current user when the JavaScript engines fail to render when handling…
When was CVE-2017-8522 disclosed?
CVE-2017-8522 was first published in the National Vulnerability Database on June 15, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-8522 actively exploited?
CVE-2017-8522 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-8522?
CVE-2017-8522 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-8522?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-8522, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2017-8522
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