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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.013 (68.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
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
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0981 (Patch, Vendor Advisory)
- packetstormsecurity.com/files/157248/Microsoft-Windows-NtFilterToken-ParentToke… (VDB Entry, Third Party Advisory)
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.