CVE-2018-8449 json
A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulne…
published 2018-09-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20085
- cvss
- 3.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.1%
- EPSS 3.1% chance of exploitation in 30 days, percentile 87%
- public exploits
- 1
- Exploit-DB
Summary
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.
Patch / fix
Timeline
- Published
- First public exploit (EDB-45435)
Exploit prediction
3.11% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-45435 Microsoft Windows - 'CiSetFileCache' WDAC Security Feature Bypass TOCTOU dos, 2018-09-19
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 3.3 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- Microsoft Windows Server 2016
- Microsoft Windows 10
- Microsoft Windows 10 Servers
Classification
- Weakness
-
- CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8449
patch, vendor-advisory
-
exploit-db.com
/exploits/45435/
exploit, third-party-advisory, vdb-entry
-
securitytracker.com
/id/1041642
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/105272
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8449
- NVD CVE-2018-8449
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.