VulnerabilityModified

CVE-2017-8517

HIGH 7.5EPSS 8.21%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (8.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Microsoft browsers in Microsoft Windows Server 2008 SP2 and R2 SP1, 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-2017-8522 and CVE-2017-8524.

CVSS 3.0: 7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 8.21% probability · 95th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-119
Affected: microsoft/internet explorer
Source: secure@microsoft.com

EPSS trend

EPSS 8.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securityfocus.com/bid/98895Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038673Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8517Patch, Vendor Advisory
http://www.securityfocus.com/bid/98895Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038673Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8517Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.