Actively exploited · Published Aug 12, 2021 · Assigned by microsoft
CVE-2021-36948Windows Update Medic Service Elevation of Privilege Vulnerability
High 7.8 Exploited
In plain English
A high-severity security flaw in Windows 10 Version 1809 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 23.3% (higher than 98% of all known vulnerabilities). Apply updates per vendor instructions.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)23.3%top 2.2% of all CVEs
Exploited in the wildYesCISA KEV since Nov 3, 2021
Attack toolingNoneno public tooling known
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Nov 17, 2021.
Official description
Windows Update Medic Service Elevation of Privilege Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.2114 |
| Microsoft | Windows 10 Version 1809 | 10.0.0 – before 10.0.17763.2114 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before 10.0.18363.1734 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 – before 10.0.19041.1165 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 – before 10.0.19042.1165 |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 – before 10.0.19043.1165 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.2114 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.2114 |
| Microsoft | Windows Server version 2004 | 10.0.0 – before 10.0.19041.1165 |
| Microsoft | Windows Server version 20H2 | 10.0.0 – before 10.0.19042.1165 |
References
- Windows Update Medic Service Elevation of Privilege Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36948 x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36948 government-resource