CVE-2026-62892 in Windows
Summary
by MITRE • 08/11/2026
Use after free in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 08/11/2026
The vulnerability described represents a critical use-after-free condition within the Capability Access Management Service component of Microsoft Windows operating systems, specifically affecting the camsvc service. This issue arises from improper memory management practices where freed memory blocks are still referenced after deallocation, creating opportunities for malicious code execution and privilege escalation. The flaw exists in the way the service handles capability access requests and manages associated memory resources during process execution.
The technical implementation of this vulnerability stems from CWE-416, which classifies use-after-free conditions as a fundamental memory safety issue. When legitimate processes attempt to interact with the camsvc service through capability access mechanisms, the service fails to properly validate or invalidate memory references after object deallocation occurs. This creates a window where attacker-controlled data can be written to freed memory locations, potentially allowing arbitrary code execution within the context of the target process. The vulnerability specifically impacts Windows versions that utilize the Capability Access Management Service for handling application permissions and access control.
Operationally, this vulnerability enables local privilege escalation attacks by allowing an authorized user or process to exploit the use-after-free condition through carefully crafted capability access requests. The attacker does not require administrative privileges initially but can leverage the flaw to gain elevated system rights. The attack vector typically involves establishing a legitimate session with the camsvc service and then triggering memory corruption through malformed capability access parameters. This allows exploitation of the vulnerability with minimal detection risk, as it operates within normal system processes and service interactions.
Mitigation strategies for this vulnerability encompass multiple layers of defense including immediate deployment of Microsoft security patches, implementation of application control policies through Windows Defender Application Control, and enforcement of least privilege principles for all user accounts. System administrators should also implement monitoring solutions to detect anomalous capability access patterns that might indicate exploitation attempts. The ATT&CK framework categorizes this as a privilege escalation technique under T1068, specifically targeting Windows service manipulation and memory corruption vulnerabilities. Organizations must also consider implementing runtime application protection measures and regular security assessments to identify similar memory safety issues in other system components.
The broader implications of this vulnerability extend beyond immediate exploitation potential, highlighting systemic weaknesses in Windows service architecture design and memory management practices. This flaw demonstrates the critical importance of rigorous code review processes and automated memory safety testing in enterprise operating systems. Security teams should conduct comprehensive vulnerability assessments of all Windows services that handle capability access and permission management, as similar patterns may exist in other system components. The vulnerability serves as a reminder of the persistent challenges in maintaining memory safety within complex operating system environments where legacy code integration and modern security requirements must coexist effectively.