CVE-2026-50410 in Windows
Summary
by MITRE • 07/14/2026
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical use-after-free condition within the Windows Runtime component that enables authenticated attackers to achieve local privilege escalation. The flaw occurs when the system fails to properly validate object references after memory deallocation, creating opportunities for malicious code execution. Such vulnerabilities fall under the common weakness enumeration CWE-416 which specifically addresses use-after-free conditions where program code attempts to access memory after it has been freed. The Windows Runtime environment handles various system operations and interfaces with core operating system components, making this vulnerability particularly dangerous as it can be exploited to gain elevated privileges from a standard user account.
The technical implementation of this vulnerability involves improper memory management within the Windows Runtime subsystem where objects are not adequately tracked after deallocation. When an attacker successfully triggers the use-after-free condition, they can manipulate the freed memory location to execute arbitrary code with higher privileges. This typically occurs through carefully crafted input that causes the runtime to free memory containing critical data structures while other processes or threads may still reference them. The attack vector requires local authentication since the vulnerability exists within the operating system's core runtime environment and cannot be exploited remotely.
Operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with persistent access to system resources and capabilities that would otherwise be restricted. Once elevated privileges are obtained, attackers can modify critical system files, install malicious software, create new user accounts, and disable security features. The vulnerability affects systems running Windows operating systems where the Runtime component is present, potentially compromising entire networks if exploited in multi-system environments. Security monitoring should focus on unusual memory access patterns and privilege escalation attempts that may indicate exploitation of this weakness.
Mitigation strategies should include immediate deployment of microsoft security updates that address the specific use-after-free condition within the Windows Runtime. Organizations must implement robust patch management processes to ensure timely application of security fixes across all systems. Additional protective measures include enabling address space layout randomization ASLR and data execution prevention DEP to make exploitation more difficult. System administrators should also monitor for suspicious privilege escalation events and implement least privilege principles to limit potential damage from successful exploitation. The mitigation approach aligns with attack technique t1068 which describes privilege escalation methods that exploit software vulnerabilities to gain elevated system access. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other system components that may present comparable risks.