CVE-2018-8355
A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 67.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8353, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.
- 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
- 67.90% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 18 September 2018
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- microsoft/internet explorer · microsoft/chakracore · microsoft/edge
- Source
- secure@microsoft.com
EPSS moved from 62.5% on 21 September 2026 to 67.9% on 27 October 2026, peaking at 68.2% on 22 September 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.
References
- http://www.securityfocus.com/bid/104978Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041457Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8355Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/45432/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/104978Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041457Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8355Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/45432/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.