Introduction
Privilege escalation on a production server can break the isolation between workloads and expose sensitive data. CVE-2025-22840 is a vulnerability in Intel Xeon 6 Scalable processors that may let an authenticated user gain elevated privileges by running a specific sequence of processor instructions.
About Intel and Xeon 6 Scalable Processors: Intel is a major processor manufacturer, and its Xeon line runs a large share of enterprise, cloud, and high-performance computing systems. The Xeon 6 Scalable series is built for heavy data center workloads, and organizations around the world have adopted it widely. Past Intel processor vulnerabilities have affected much of the industry, so this issue is worth close attention from security teams.
Technical Information
CVE-2025-22840 is classified under CWE-1281: Sequence of Processor Instructions Leads to Unexpected Behavior. Running a specific sequence of instructions on an affected Intel Xeon 6 Scalable processor can make the processor behave in an unintended way, which may let an authenticated local user escalate privileges. The underlying flaw relates to how the processor handles instruction sequences and manages its internal state. No further microarchitectural or code-level details have been made public so far.
Affected Systems and Versions
- Intel Xeon 6 Scalable processors (public sources do not specify exact model numbers or steppings)
- Only systems with these processors are affected
- Exploitation requires local, authenticated access
Vendor Security History
Intel's processor lines have had high-profile vulnerabilities before, including the speculative execution flaws Meltdown, Spectre, and Foreshadow. Intel typically responds with microcode updates and detailed advisories. It runs a public vulnerability disclosure program and regularly publishes security advisories for processor-related issues.
