VulnerabilityModified

CVE-2017-11858

HIGH 7.5EPSS 8.36%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (8.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

ChakraCore and Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how Microsoft browsers handle objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11839, CVE-2017-11840, CVE-2017-11841, CVE-2017-11843, CVE-2017-11846, CVE-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11866, CVE-2017-11869, CVE-2017-11870, CVE-2017-11871, and CVE-2017-11873.

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: 8.36% probability · 95th percentile
CISA KEV: Not listed
Weakness: CWE-119
Affected: microsoft/chakracore · microsoft/internet explorer · microsoft/edge
Source: secure@microsoft.com

References

http://www.securityfocus.com/bid/101716Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039780Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039781Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11858Patch, Vendor Advisory
http://www.securityfocus.com/bid/101716Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039780Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039781Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11858Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.