Auth bypass in Microsoft Windows
CVE-2019-0732
A security feature bypass vulnerability exists in Windows which could allow an attacker to bypass Device Guard when Windows improperly handles calls to the LUAFV driver (luafv.sys), aka 'Windows Security Feature Bypass Vulnerability'.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.038 (89.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000
Affected products
- Microsoft Windows — versions 7 for 32-bit Systems Service Pack 1, 7 for x64-based Systems Service Pack 1, 8.1 for 32-bit systems
- Microsoft Windows 10 — versions 1607, 1703, 1709
- Microsoft Windows 7
- Microsoft Windows 8.1
- Microsoft Windows Rt 8.1
- Microsoft Windows Server — versions 2008 R2 for x64-based Systems Service Pack 1 (Core installation), 2008 R2 for Itanium-Based Systems Service Pack 1, 2008 R2 for x64-based Systems Service Pack 1
- Microsoft Windows Server 2008 — versions r2
- Microsoft Windows Server 2012 — versions r2
- Microsoft Windows Server 2016 — versions 1709, 1803
- Microsoft Windows Server 2019
Weakness classification (CWE)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0732 (Patch, Vendor Advisory)
- www.exploit-db.com/exploits/46716/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- packetstormsecurity.com/files/152536/Microsoft-Windows-LUAFV-NtSetCachedSigning… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-0732?
- CVE-2019-0732 is a high-severity vulnerability in Microsoft Windows, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2019-04-09.
- How severe is CVE-2019-0732?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-0732 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.