CVE-2021-36948
Windows Update Medic Service Elevation of Privilege Vulnerability
CVE-2021-36948 is a high vulnerability (CVSS 7.8) in Microsoft Windows, published August 12, 2021. CISA lists it as known to be exploited, since November 3, 2021. EUVD reports exploitation since November 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 23.3%, the 97th percentile. No source names a fixed version.
- Severity
- 7.8 HighCVSS 3.1, CVE List
- Exploit chance
- 23.3%EPSS, 97th percentile
- Exploitation
- ExploitedCISA KEV,
- Fixed in
- No fix listedNo source names one
Description
Windows Update Medic Service Elevation of Privilege Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
- microsoft windows
- microsoft windows 10 version 1809
- microsoft windows 10 version 1909
- microsoft windows 10 version 2004
- microsoft windows 10 version 20h2
- microsoft windows 10 version 21h1
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server version 2004
- microsoft windows server version 20h2
- microsoft windows 10 1809
- microsoft windows 10 1909
What each source reports
CVE List Score used
Windows Update Medic Service Elevation of Privilege Vulnerability
Windows Update Medic Service Elevation of Privilege Vulnerability
- Record
CVE-2021-36948- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-23524
Windows Update Medic Service Elevation of Privilege Vulnerability
- Record
EUVD-2021-23524- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fcr2-qx8m-pfhp
Windows Update Medic Service Elevation of Privilege Vulnerability
Windows Update Medic Service Elevation of Privilege Vulnerability
- Record
GHSA-fcr2-qx8m-pfhp- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-269
- Updated
- 2026-11-02
CISA KEVNo score
Microsoft Windows Update Medic Service Privilege Escalation Vulnerability
Microsoft Windows Update Medic Service contains an unspecified vulnerability that allows for privilege escalation.
- Record
CVE-2021-36948- Updated
- 2026-11-02
NVD
Windows Update Medic Service Elevation of Privilege Vulnerability
- Record
CVE-2021-36948- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.