CVE-2026-83648
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk65th percentile - higher than 65% of all known CVEs
Summary
Null pointer dereference vulnerability in Active Directory Domain Services allows an authorized attacker to deny service over a network.
Risk Assessment
An attacker could cause the directory service to crash, potentially leading to disruption of dependent services.
Recommendation
Install security updates for Active Directory Domain Services from Microsoft.
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-2021-42278HighActively 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-2026-83647High
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)
Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS