CVE-2025-20053 Privilege escalation in Intel(R) Xeon(R) Processor firmware with SGX enabled
A privileged local attacker can escalate privileges via improper buffer restrictions in Intel Xeon firmware with SGX enabled.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-20053?
CVE-2025-20053 is a high-severity vulnerability in Intel(R) Xeon(R) Processor firmware with SGX enabled, published on 12 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper buffer restrictions for some Intel(R) Xeon(R) Processor firmware with SGX enabled may allow a privileged user to potentially enable escalation of privilege via local access.
Weakness: CWE-119
Which versions are affected by CVE-2025-20053?
How do I fix CVE-2025-20053?
Apply the vendor's patch.
Is CVE-2025-20053 being exploited?
There is no known exploitation of CVE-2025-20053 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2025-20053, BELL-CVE-2025-20053, DEBIAN-CVE-2025-20053, GHSA-4h3q-h7pr-48v4, UBUNTU-CVE-2025-20053.