Description

In mtee, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9607.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.7",
  "pubDate": "2026-10-05T02:16:54.033Z",
  "pubdate": "2026-10-05T02:16:54.033Z",
  "executiveSummary": "A privilege escalation vulnerability exists within the mtee component, originating from an inadequate bounds check during memory operations. This security flaw allows for unauthorized memory access or manipulation, potentially enabling an actor who has already secured System-level privileges to perform further malicious actions.\nThe vulnerability is characterized by a failure to validate input sizes prior to memory processing, which violates standard secure coding practices. While the exploit requires an existing System-level foothold, it does not necessitate user interaction, making it a critical concern for maintainers of privileged system processes.\nThe primary risk involves the subversion of system integrity or the bypass of security boundaries that rely on internal kernel or system service constraints. Organizations utilizing affected versions of mtee should prioritize the application of the vendor-provided patch to remediate the identified memory management defect.",
  "technicalDetails": "The root cause of the vulnerability in mtee is a missing bounds check when processing data, leading to an out-of-bounds memory access condition. In the context of system-level drivers or services like mtee, such defects often arise when the length of an input buffer provided by a user-mode caller or internal process is not verified against the allocated destination buffer size.\nThe attack flow initiates when a malicious entity—having already achieved System-level privileges—interacts with the mtee component. Because the component lacks the necessary bounds validation logic, the attacker can supply crafted data that exceeds the intended memory boundary. When the processing routine executes, the missing check allows the write or read operation to spill into adjacent memory addresses.\nSpecifically, the flaw likely resides in the handling of memory buffers during inter-process communication or system call processing. By manipulating the size parameters or the payload contents, an attacker can trigger a heap or stack corruption scenario. If the attacker can influence the state of the memory surrounding the target buffer, they may redirect execution flow, overwrite critical kernel structures, or corrupt sensitive data objects that govern system security policy enforcement.\nGiven that the exploit occurs within a privileged context, the post-exploitation impact is severe. An actor capable of exploiting this missing bounds check can effectively bypass kernel-level integrity protections or maintain persistence that is invisible to standard user-mode monitoring tools. Because the vulnerability requires prior System-level execution, it is effectively a secondary stage escalation or an expansion of capability for a compromised system process. The lack of required user interaction ensures that the attack can be automated by malware once a primary compromise has been achieved, facilitating rapid lateral movement or deeper system integration.\nThe vulnerability is tracked under Issue ID MSV-9607 and requires the application of Patch ID ALPS11383899 to ensure proper validation logic is enforced. Developers and security administrators must ensure that all input buffers are strictly checked against fixed-length constraints before memory copies or pointer arithmetic are performed to prevent similar overflows."
}