Description

Use after free in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.0",
  "pubDate": "2026-08-11T17:18:42.337Z",
  "pubdate": "2026-08-11T17:18:42.337Z",
  "executiveSummary": "A use-after-free vulnerability has been identified within the Capability Access Management Service (camsvc). This security flaw enables an authenticated local attacker to execute arbitrary operations resulting in local privilege escalation.\nThe vulnerability resides in memory management logic where a dangling pointer is referenced after the underlying memory object has been deallocated. If an attacker successfully triggers this condition through precise memory manipulation, they can achieve arbitrary code execution within the context of the service.\nThe affected product is the Capability Access Management Service (camsvc). Exploitation requires local access to the target system alongside prior authorization or valid user credentials to interact with the vulnerable service interface.\nThe primary risk implication is the elevation of privileges from a standard user context to a higher-privileged state, potentially allowing complete compromise of the underlying operating system. Mitigation relies on applying vendor-supplied updates or patches that correct the memory management lifecycle within the affected service.",
  "technicalDetails": "The vulnerability is a classic use-after-free (UAF) condition manifesting within the Capability Access Management Service (camsvc). A use-after-free flaw occurs when software reuses a memory address after it has been freed, without properly nullifying or resetting the associated pointers referencing that memory region.\nThe root cause stems from improper object lifecycle management and insufficient reference counting or pointer invalidation within the vulnerable component of camsvc. When a specific sequence of operations or requests is processed, an object is deallocated prematurely while concurrent or subsequent execution paths still maintain references to the memory address.\nAn authorized local attacker can exploit this condition by interacting with the Capability Access Management Service (camsvc) via its local inter-process communication (IPC) or API endpoints. The attack flow begins with the attacker establishing a session or sending a crafted sequence of control messages designed to instantiate the target object, trigger its deallocation, and subsequently force a reallocation of the freed memory chunk with attacker-controlled data.\nOnce the dangling pointer is dereferenced during normal execution of camsvc, the application treats the attacker-controlled data as a valid object structure, leading to control flow hijacking or arbitrary function pointer execution. Because camsvc operates with elevated system privileges, successful exploitation allows the execution of arbitrary payload behavior with the permissions of the service.\nExploitation requirements include local system access and authentication to interact with the service interface. The network exposure is local, meaning remote exploitation is not feasible unless combined with a separate remote code execution or shell access vector. Post-exploitation impact includes full local privilege escalation, persistence establishment, and potential bypass of local security controls."
}