Arbitrary write vulnerability in SbPei module leads to arbitrary code execution during PEI phase.
Key facts
- Attack vector
- Physical
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
A potential attacker can write one byte by arbitrary address at the time of the PEI phase (only during S3 resume boot mode) 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: SbPei SHA256: d827182e5f9b7a9ff0b9d3e232f7cfac43b5237e2681e11f005be627a49283a9 Module GUID: c1fbd624-27ea-40d1-aa48-94c3dc5c7e0d
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AMI | Aptio | 5.x | — | No fix listed | CNA |
- Aptio VendorAMI Affected 5.x Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:0072:*:*:*:*:*:*:* | 0072 | Vulnerable | Intel |
| cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:0072:*:*:*:*:*:*:* | 0072 | Vulnerable | Intel |
| cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
- cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:0072:*:*:*:*:*:*:* Versions 0072 Vulnerable ·Intel
- cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:0072:*:*:*:*:*:*:* Versions 0072 Vulnerable ·Intel
- cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-40246
- 2026-10-03 Alias added: GHSA-jjpm-q6jh-v8gj
References
More AMI vulnerabilities
- TI-2024-36205 Redfish Authentication Bypass KEVCVSS 4.0CRITICAL 10.0
- TI-2022-19108 The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase. CVSS 3.1HIGH 8.2
- TI-2022-19103 Stack overflow vulnerability in SMI handler on SmmSmbiosElog. CVSS 3.1HIGH 8.8
- TI-2022-19107 SMM memory corruption vulnerability in OverClockSmiHandler SMM driver CVSS 3.1HIGH 8.2
- TI-2022-10117 Stack-based buffer overflow in AMI Aptio CVSS 3.1HIGH 8.2
- TI-2022-19100 MegaRAC Default Credentials Vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2022-40246 · CVE Program
- CVE-2022-40246 · NVD
- FIRST EPSS
- GHSA-jjpm-q6jh-v8gj · GitHub Advisory Database · CC BY 4.0
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