CVE-2022-26923: Microsoft Active Directory Domain Services Privilege Escalation Vulnerability
Vulnerability summary
CVE-2022-26923 is a high (CVSS 9.0) Improper Certificate Validation vulnerability in Microsoft Active Directory. It is known to be exploited: CISA lists it, first on 18-08-2022. EPSS estimates a 83.50% chance of exploitation in the next 30 days, higher than 99.6% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 10-05-2022PublishedVulnerability first disclosed.
- 18-08-2022Added to CISA KEVMicrosoft Active Directory Domain Services Privilege Escalation Vulnerability
- 08-09-2022CISA remediation dueApply updates per vendor instructions.
- 21-10-2025Last modifiedVulnerability information updated.
Description
Active Directory Domain Services Elevation of Privilege Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
83.50%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 83.50% on 21-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 18-08-2022
- Federal due date
- 08-09-2022
CISA required action
Apply updates per vendor instructions. msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-26923 nvd.nist.gov/vuln/detail/CVE-2022-26923
Public exploits
1 foundActive Directory Certificate Services (ADCS) privilege escalation (Certifried)
auxiliary/admin/dcerpc/cve_2022_26923_certifried
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Microsoft27 products
- windows_10_1507< 10.0.10240.19297
- windows_10_1607< 10.0.14393.5850
- windows_10_1809< 10.0.17763.4252
- windows_10_1909< 10.0.18363.2274
- windows_10_20h2< 10.0.19042.1706
1 vendor · 27 products
References
3 links
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26923X Refsource MISCX TransferredPatchVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26923Government ResourceUS Government Resource