CVE-2018-0956 in the critical feed json
A denial of service vulnerability exists in the HTTP 2.0 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP 2…
published 2018-04-12 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1735
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 13.7%
- EPSS 13.7% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
A denial of service vulnerability exists in the HTTP 2.0 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP 2.0 requests, aka "HTTP.sys Denial of Service Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Patch / fix
Exploit prediction
13.69% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Affected products
- Microsoft Windows Server 2016
- Microsoft Windows 10
- Microsoft Windows 10 Servers
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-0956
patch, vendor-advisory
-
securityfocus.com
/bid/103650
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1040661
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-0956
- NVD CVE-2018-0956
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.