CVE-2021-33060 Memory corruption in Intel(R) Processors

High 7.8 Published 18 Aug 2022 Updated 5 May 2025

An authenticated local attacker can exploit an out-of-bounds write in Intel BIOS firmware to escalate privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-33060?

CVE-2021-33060 is a high-severity memory corruption vulnerability in Intel(R) Processors, published on 18 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Out-of-bounds write in the BIOS firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.

Weakness: CWE-787

Which versions are affected by CVE-2021-33060?

It affects 72 products.

Products include Intel Xeon Gold 5315y Firmware, Intel Xeon Gold 5317 Firmware, Intel Xeon Gold 5318h Firmware, Intel Xeon Gold 5318n Firmware, Intel Xeon Gold 5318s Firmware, Intel Xeon Gold 5318y Firmware and 66 more.

How do I fix CVE-2021-33060?

No fix has been published for CVE-2021-33060 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-33060 being exploited?

There is no known exploitation of CVE-2021-33060 in the wild and no public exploit code.

Sources

Also known as GHSA-wq7v-mxjw-fp8v.