CVE-2021-34444
MediumCVSS 6.5Exploitation Probability (EPSS)
High risk86th percentile - higher than 86% of all known CVEs
Summary
Denial of Service (DoS) vulnerability in Windows DNS Server. An attacker could exploit this flaw to cause the DNS service to crash, preventing name resolution.
Risk Assessment
Risk of disruption of DNS services, potentially leading to unavailability of applications and services dependent on name resolution.
Recommendation
Install Windows security updates that fix this vulnerability.
Other vulnerabilities in Windows DNS Server
See all- CVE-2021-27063High
Denial of service vulnerability in Windows DNS Server. An attacker could exploit this vulnerability to cause the DNS service to become unavailable.
- CVE-2021-26897Critical
Remote code execution vulnerability in Windows DNS Server. An attacker could exploit it to execute code on the DNS server.
- CVE-2021-26896High
Denial of service vulnerability in Windows DNS Server. An attacker could exploit this vulnerability to cause the DNS service to become unavailable.
- CVE-2021-26895Critical
Remote code execution vulnerability in Windows DNS Server. An attacker could exploit it to execute code on the DNS server.
- CVE-2021-26894Critical
Remote code execution vulnerability in Windows DNS Server. An attacker could exploit this flaw to execute arbitrary code in the context of the service.
- CVE-2021-26893Critical
Remote code execution vulnerability in Windows DNS Server. An attacker could exploit this flaw to execute arbitrary code in the context of the service.
- CVE-2021-26877Critical
Remote code execution vulnerability in Windows DNS Server. An attacker could exploit it to execute code on the DNS server.
- CVE-2020-1350CriticalActively exploited
A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows DNS Server Remote Code Execution Vulnerability'.
- CVE-2026-77505High
A use-after-free vulnerability in DNS Server allows an unauthorized attacker to execute code remotely over the network.
- CVE-2023-35346Medium
A vulnerability in the Windows DNS Server allows for remote code execution. An attacker can exploit this flaw to gain control over the system.
Original NVD description (English source)
Windows DNS Server Denial of Service Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS