CVE-2018-8449
A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is low and EPSS is 3.1%. Treat it as high on anything reachable from the internet.
Description
A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
- CVSS 3.0
- 3.3 LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 3.11% probability · 88th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 19 September 2018
- CISA KEV
- Not listed
- Weakness
- CWE-367
- Affected
- microsoft/windows 10 · microsoft/windows server 2016
- Source
- secure@microsoft.com
EPSS moved from 4.2% on 21 September 2026 to 3.1% on 27 October 2026.
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/105272Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041642Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8449Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/45435/Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/105272Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041642Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8449Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/45435/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.