Microsoft Discloses Critical Active Directory RCE and DoS Vulnerabilities in Windows
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Microsoft has announced two significant vulnerabilities in Windows Active Directory, designated as CVE-2026-119948 and CVE-2026-105559. These flaws have an Important severity rating and can lead to remote code execution and denial of service conditions. Exploitation requires low privileges and no user interaction, making them particularly dangerous within enterprise networks where account hijacking could occur. The vulnerabilities underscore the importance of timely patching and security monitoring in affected environments.
Entenda a falha
A vulnerabilidade
Microsoft disclosed two Windows Active Directory flaws on November 10, 2026: CVE-2026-119948 and CVE-2026-105559. Both are rated Important. One class of impact is remote code execution and the other is denial of service, but the articles do not say which CVE causes which. An attacker needs only low privileges and no user interaction, so a hijacked ordinary account could be enough. The articles do not list affected versions or fixed build numbers, only that Microsoft released security updates for the relevant Windows Server versions.
Como foi descoberta
The articles say only that Microsoft disclosed both vulnerabilities on November 10, 2026, together with security updates. They do not say who found the flaws, how they were reported, or whether they were exploited in the wild.
Explicação gerada por IA a partir da matéria e dos artigos, em 11/11/2026 10:16.
Detalhes técnicos
The vulnerabilities affect Windows Active Directory services, allowing low-privileged users to execute arbitrary code or cause system crashes remotely. Both CVEs are critical for organizations with legacy or unpatched domain controllers, as they pose a high risk of lateral movement and disruption.
Detalhes da correção
The vulnerabilities were disclosed by Microsoft on November 10, 2026. Microsoft has provided security updates that address the issues; administrators are urged to apply the patches immediately to prevent potential exploitation.
Remediação
Apply the latest security patches from Microsoft relevant to your Windows Server version, and review Active Directory security configurations to mitigate the risk of credential theft or abuse.
Linha do tempo
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Microsoft Discloses Critical Active Directory RCE and DoS Vulnerabilities in Windows
ler a análise desta fonte ocultar
Microsoft has announced two significant vulnerabilities in Windows Active Directory, designated as CVE-2026-119948 and CVE-2026-105559. These flaws have an Important severity rating and can lead to remote code execution and denial of service conditions. Exploitation requires low privileges and no user interaction, making them particularly dangerous within enterprise networks where account hijacking could occur. The vulnerabilities underscore the importance of timely patching and security monitoring in affected environments.
Technical Details
The vulnerabilities affect Windows Active Directory services, allowing low-privileged users to execute arbitrary code or cause system crashes remotely. Both CVEs are critical for organizations with legacy or unpatched domain controllers, as they pose a high risk of lateral movement and disruption.
Fix Details
The vulnerabilities were disclosed by Microsoft on November 10, 2026. Microsoft has provided security updates that address the issues; administrators are urged to apply the patches immediately to prevent potential exploitation.
Remediation
Apply the latest security patches from Microsoft relevant to your Windows Server version, and review Active Directory security configurations to mitigate the risk of credential theft or abuse.