CVE-2018-8335
A denial of service vulnerability exists in the Microsoft Server Block Message (SMB) when an attacker sends specially crafted requests to the server, aka "Windows SMB Denial of Service Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1,…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A denial of service vulnerability exists in the Microsoft Server Block Message (SMB) when an attacker sends specially crafted requests to the server, aka "Windows SMB Denial of Service Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 9.00% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- microsoft/windows 10 · microsoft/windows 8.1 · microsoft/windows server
- Source
- secure@microsoft.com
EPSS 9.0% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105224Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041634Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8335Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105224Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041634Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8335Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.