Vulnerability Intelligence Report
The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase.
CVE-2022-40262
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
No Active Exploit Signals
CVSS Base Score
8.2
HIGH
Exploitability:1.5
Impact Score:6.1
EPSS Probability:0.31%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-123 ↗CWE-123 Write-what-where Condition
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| AMI | Aptio | 5.x (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.307%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | CERT/CC · CERT · USA |
| Reserved | 2022-09-08T00:00:00 |
| Published | 2022-09-20T17:35:36 |
| Patch Date | 2022-08-11 |
| Last Updated | 2025-05-27T18:13:02 |
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