Auth bypass in Microsoft Windows 10
CVE-2020-0981
A security feature bypass vulnerability exists when Windows fails to properly handle token relationships.An attacker who successfully exploited the vulnerability could allow an application with a certain integrity level to execute code at a different integrity level, leading to a sandbox escape.The update addresses the vulnerability by correcting how Windows handles token relationships, aka 'Windows Token Security Feature Bypass Vulnerability'.
Vulnerability class: Broken Access Control
EPSS: 0.012 (66.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Microsoft Windows_10 — versions 1903, 1909
- Microsoft Windows 10 Version 1903 For 32-bit Systems — versions unspecified
- Microsoft Windows 10 Version 1903 For Arm64-based Systems — versions unspecified
- Microsoft Windows 10 Version 1903 For X64-based Systems — versions unspecified
- Microsoft Windows 10 Version 1909 For 32-bit Systems — versions unspecified
- Microsoft Windows 10 Version 1909 For Arm64-based Systems — versions unspecified
- Microsoft Windows 10 Version 1909 For X64-based Systems — versions unspecified
- Microsoft Windows_server_2016 — versions 1903, 1909
- Microsoft Windows Server, Version 1903 (Server Core Installation) — versions unspecified
- Microsoft Windows Server, Version 1909 (Server Core Installation) — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-0981?
- CVE-2020-0981 is a high-severity vulnerability in Microsoft Windows 10, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2020-04-15.
- How severe is CVE-2020-0981?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-0981 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.