AEGLIX vulnerability intelligence
CVE-2021-42278
HIGH · CVSS 7.5 · Analyzed
Published: 2021-11-10 · Updated: 2026-08-19 · Source: NVD
Vulnerability overview
Active Directory Domain Services Elevation of Privilege Vulnerability
Severity and scoring
- CVSS score
- 7.5 · HIGH
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- NVD-CWE-noinfo
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Microsoft · Active Directory
- Added to catalog
- 2022-04-11
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-05-02
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
Before (exclusive): 10.0.19041.1348
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
Before (exclusive): 10.0.14393.4770
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
Before (exclusive): 10.0.17763.2300
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
Before (exclusive): 10.0.20348.350
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*
Before (exclusive): 10.0.19042.1348
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42278
Patch · Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42278
Patch · Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42278
US Government Resource