CVE-2026-21387: Protection mechanism failure for some Intel(R) LLM Library for PyTorch within Ring 3: User Applications may allow an escalation of privilege. Unprivileged software adversary with a privileged user ...

Added to the CISA Known Exploited Vulnerabilities catalog on 11 Aug 2026. Vendor: AI/ML. Product: LLM.

Protection mechanism failure for some Intel(R) LLM Library for PyTorch within Ring 3: User Applications may allow an escalation of privilege. Unprivileged software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentiall...

Required action: Review and patch if applicable to your AI infrastructure.