CVE-2022-40262 The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase.

High 8.2 Published 20 Sep 2022 Updated 27 May 2025

An arbitrary write vulnerability in S3Resume2Pei allows attackers to execute code during boot, bypass security mitigations, and access sensitive memory.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-40262?

CVE-2022-40262 is a high-severity memory corruption vulnerability in AMI Aptio, published on 20 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A potential attacker can execute an arbitrary code at the time of the PEI phase and influence the subsequent boot stages. This can lead to the mitigations bypassing, physical memory contents disclosure, discovery of any secrets from any Virtual Machines (VMs) and bypassing memory isolation and confidential computing boundaries. Additionally, an attacker can build a payload which can be injected into the SMRAM memory. This issue affects: Module name: S3Resume2Pei SHA256: 7bb29f05534a8a1e010443213451425098faebd45948a4642db969b19d0253fc Module GUID: 89E549B0-7CFE-449D-9BA3-10D8B2312D71

Weakness: CWE-787, CWE-123

Which versions are affected by CVE-2022-40262?

It affects 2 products.

Products include Ami Aptio V, Intel Server Board M10jnp2sb Firmware.

How do I fix CVE-2022-40262?

No fix has been published for CVE-2022-40262 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-2022-40262 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40262 exists.

Sources

Also known as GHSA-5fpf-9vcp-wpjr.