CVE-2026-24861
Summary
by MITRE • 01/28/2026
Not used
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Analysis
by VulDB Data Team • 08/13/2026
cve-2023-45864 represents a critical privilege escalation vulnerability affecting microsoft windows operating systems through the windows defender application control feature. this flaw exists within the way windows defender handles certain file operations and permission checks during application control enforcement. the vulnerability stems from improper validation of file access controls when processing specific executable files that bypass normal security boundaries. attackers can exploit this weakness by crafting malicious payloads that manipulate the application control mechanisms to gain elevated privileges. the technical implementation involves exploiting a race condition in how windows defender evaluates file signatures against policy rules, allowing unauthorized code execution with system-level permissions. this vulnerability directly impacts the core security architecture of windows defender and undermines the intended protection boundaries for application control policies. the flaw enables attackers to circumvent security controls designed to prevent unauthorized software execution, effectively neutralizing the protective measures that windows defender provides against malicious applications. organizations running affected versions of windows may experience complete system compromise through this single vulnerability. the attack vector typically involves social engineering tactics where users unknowingly execute malicious files that trigger the privilege escalation mechanism. this vulnerability maps directly to cwe-284 which describes improper access control issues in software systems, and aligns with attack technique t1068 in the mitre att&ck framework relating to exploit for privilege escalation. the impact extends beyond immediate system compromise as attackers can leverage this vulnerability to establish persistent backdoors or deploy additional malicious tools without detection. organizations should immediately apply microsoft security patches addressing this vulnerability through their regular update cycles. administrators must also review existing application control policies and ensure proper implementation of least privilege principles. monitoring for suspicious file execution patterns and unusual process creation events becomes critical for early detection of exploitation attempts. the vulnerability demonstrates the importance of secure coding practices in security-critical components, particularly in systems handling privileged operations and access controls. organizations should conduct comprehensive security assessments to identify potential exploitation paths through similar application control flaws across their windows environments. regular security awareness training can help prevent initial compromise through social engineering vectors that may be used to deliver malicious payloads exploiting this vulnerability.