Actively exploited in the wild
Microsoft Active Directory Domain Services Privilege Escalation Vulnerability
Microsoft - Active Directory · Listed in the CISA KEV since 2022-04-11. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2021-42278
HighCVSS 7.5KEVExploitation Probability (EPSS)
Very high risk99th percentile - higher than 99% of all known CVEs
Summary
Active Directory Domain Services Elevation of Privilege Vulnerability. Technical details are not provided in the description.
Risk Assessment
An attacker with domain credentials could elevate privileges to domain administrator, potentially leading to full compromise of the entire infrastructure.
Recommendation
Apply security patches provided by Microsoft. Monitor Active Directory events for unusual activities.
Other vulnerabilities in Active Directory Domain Services
See all- CVE-2022-26923HighActively exploited
A privilege elevation vulnerability in Active Directory Domain Services (AD DS). An attacker can gain domain administrator privileges.
- CVE-2021-42287HighActively exploited
Active Directory Domain Services Elevation of Privilege Vulnerability. Technical details are not provided in the description.
- CVE-2026-88165High
Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.
- CVE-2026-83667Medium
Out-of-bounds read vulnerability in Active Directory Domain Services allows an authorized attacker to deny service over a network.
- CVE-2026-83648Medium
Null pointer dereference vulnerability in Active Directory Domain Services allows an authorized attacker to deny service over a network.
- CVE-2026-83647High
Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.
- CVE-2026-70229High
Incorrect authorization in Active Directory Domain Services. An unauthorized attacker can execute code over a network.
- CVE-2026-69809High
Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.
- CVE-2026-69546High
Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.
- CVE-2026-69524High
Use-after-free vulnerability in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Active Directory Domain Services Elevation of Privilege Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS