Auth bypass in Microsoft Windows 10
CVE-2019-0555
An elevation of privilege vulnerability exists in the Microsoft XmlDocument class that could allow an attacker to escape from the AppContainer sandbox in the browser, aka "Microsoft XmlDocument Elevation of Privilege Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.
Vulnerability class: Broken Access Control
EPSS: 0.024 (82.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Microsoft Windows_10 — versions 1607, 1703, 1709
- Microsoft Windows_8.1
- Microsoft Windows_rt_8.1
- Microsoft Windows_server_2012 — versions r2
- Microsoft Windows_server_2016 — versions 1709, 1803
- Microsoft Windows_server_2019
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Exploit, VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- secure@microsoft.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-0555?
- CVE-2019-0555 is a high-severity vulnerability in Microsoft Windows 10, classified under Missing Authorization. CVSS score: 7.8/10. Published 2019-01-08.
- How severe is CVE-2019-0555?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-0555 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.