SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-11918

ChakraCore and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine…

EXPLOIT ✓HIGH 7.5EPSS 62.6%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 62.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

ChakraCore and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11895, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11916, and CVE-2017-11930.

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
62.65% probability · 99th percentile
Public exploits
1 in Exploit-DB · verified · first 9 January 2018
CISA KEV
Not listed
Weakness
CWE-119
Affected
microsoft/edge · microsoft/chakracore
Source
secure@microsoft.com
EPSS trend
0%33%65%21 September 2026: 48.01%22 September 2026: 62.65%27 October 2026: 62.65%21 September 202627 October 2026

EPSS moved from 48.0% on 21 September 2026 to 62.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-43469source ↗Microsoft Edge Chakra JIT - Escape Analysis Bugwindows · Google Security Researchdos9 January 2018yes

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