SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-11861

Microsoft Edge in Windows 10 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 the scripting engine handles objects in memory, aka "Scripting Engine…

EXPLOIT ✓HIGH 7.5EPSS 64.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 64.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Microsoft Edge in Windows 10 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 the scripting engine handles 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-2017-11858, CVE-2017-11859, 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
64.19% probability · 99th percentile
Public exploits
1 in Exploit-DB · verified · first 16 November 2017
CISA KEV
Not listed
Weakness
CWE-119
Affected
microsoft/chakracore · microsoft/edge
Source
secure@microsoft.com
EPSS trend
0%33%65%21 September 2026: 49.74%22 September 2026: 64.19%27 October 2026: 64.19%21 September 202627 October 2026

EPSS moved from 49.7% on 21 September 2026 to 64.2% 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-43153source ↗Microsoft Edge Chakra: JIT - 'Lowerer::LowerBoundCheck' Incorrect Integer Overflow Checkwindows · Google Security Researchdos16 November 2017yes

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