Elevation of Privilege Vulnerability in Active Directory Domain Services by Microsoft
CVE-2026-25177
Key Information:
- Vendor
Microsoft
- Vendor
- CVE Published:
- 10 March 2026
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What is CVE-2026-25177?
CVE-2026-25177 is a serious vulnerability found in Microsoft Active Directory Domain Services (AD DS), a fundamental component for network identity and access management in various enterprise environments. This vulnerability arises from improper restrictions on naming conventions for files and resources within AD DS, which can be exploited by authorized attackers to elevate their privileges across a network. Such escalated privileges can allow a compromised user to gain administrative control, potentially leading to unauthorized access to sensitive information, modification of security settings, or further attacks on other systems within the network.
This flaw emphasizes the necessity for stringent controls and caution within enterprise networks, as it poses significant risks to an organization's operational integrity and overall security posture. Given that AD DS is widely deployed for managing user accounts and access permissions, the implications of this vulnerability are far-reaching, affecting a large number of organizations and their data security frameworks.
Potential impact of CVE-2026-25177
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Unauthorized Access and Control: By exploiting this vulnerability, an attacker with existing authorization could gain elevated privileges, allowing them to access sensitive data or modify configurations, which could lead to unauthorized activities and data breaches.
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Data Compromise: The ability to escalate privileges may enable attackers to exfiltrate sensitive information, potentially leading to significant data leaks, loss of intellectual property, and damage to reputations, particularly for organizations in regulated industries.
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Increased Risk of Further Attacks: Once attackers attain higher privileges, they might exploit the compromised system to launch additional attacks within the network, such as installing malware or pivoting to other vulnerable systems, increasing the complexity and scope of the security incident.
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Affected Version(s)
Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8957
Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8511
Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7058
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.