CVE-2018-8231
A remote code execution vulnerability exists when HTTP Protocol Stack (Http.sys) improperly handles objects in memory, aka "HTTP Protocol Stack Remote Code Execution Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 16.1%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
A remote code execution vulnerability exists when HTTP Protocol Stack (Http.sys) improperly handles objects in memory, aka "HTTP Protocol Stack Remote Code Execution Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
- CVSS 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 16.08% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- microsoft/windows 10 · microsoft/windows server 1803 · microsoft/windows server 2016
- Source
- secure@microsoft.com
EPSS moved from 19.3% on 21 September 2026 to 16.1% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/104373Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041094Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8231Patch, Vendor Advisory
- http://www.securityfocus.com/bid/104373Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041094Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8231Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.