SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-0223

A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when handling objects in memory. aka "Scripting Engine Memory Corruption Vulnerability".

CRITICAL 9.8EPSS 14.7%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 14.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.

Description

A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when handling objects in memory. aka "Scripting Engine Memory Corruption Vulnerability". This vulnerability is unique from CVE-2017-0252.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
14.68% probability · 97th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
microsoft/edge
Source
secure@microsoft.com
EPSS trend
0%8%15%21 September 2026: 13.42%22 September 2026: 14.68%27 October 2026: 14.68%21 September 202627 October 2026

EPSS moved from 13.4% on 21 September 2026 to 14.7% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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