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TI-2022-19103 Aliases CVE-2022-40250GHSA-27wf-832r-r7vc

Stack overflow vulnerability in SMI handler on SmmSmbiosElog.

Priority HIGH 73CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
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-121 and the CVSS impact.

Summary

An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in System Management Mode - an environment more privileged than operating system (OS) and completely isolated from it. Running arbitrary code in SMM additionally bypasses SMM-based SPI flash protections against modifications, which can help an attacker to install a firmware backdoor/implant into BIOS. Such a malicious firmware code in BIOS could persist across operating system re-installs. Additionally, this vulnerability potentially could be used by malicious actors to bypass security mechanisms provided by UEFI firmware (for example, Secure Boot and some types of memory isolation for hypervisors). This issue affects: Module name: SmmSmbiosElog SHA256: 3a8acb4f9bddccb19ec3b22b22ad97963711550f76b27b606461cd5073a93b59 Module GUID: 8e61fd6b-7a8b-404f-b83f-aa90a47cabdf This issue affects: AMI Aptio 5.x. This issue affects: AMI Aptio 5.x.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00497 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
AMIAptio5.x—No fix listedCNA
  • Aptio VendorAMI Affected 5.x Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:bc0074:*:*:*:*:*:*:*bc0074VulnerableIntel
cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:*:*:*:*:*:*:*not specified by NVDRunning onIntel
cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:bc0074:*:*:*:*:*:*:*bc0074VulnerableIntel
cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:*not specified by NVDRunning onIntel
cpe:2.3:o:ami:aptio_v:5.0:*:*:*:*:*:*:*5.0VulnerableAMI
  • cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:bc0074:*:*:*:*:*:*:* Versions bc0074 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:bc0074:*:*:*:*:*:*:* Versions bc0074 Vulnerable ·Intel
  • cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
  • cpe:2.3:o:ami:aptio_v:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·AMI

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-40250
  2. 2026-10-03 Alias added: GHSA-27wf-832r-r7vc

References

Exploit 1

Advisory 2

  • TI-2022-19108 The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase. CVSS 3.1HIGH 8.2
  • 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-2024-28413 Runtime Service Access outside SMRAM CVSS 3.1HIGH 8.8
  • TI-2025-24038 Legacy Serial Redirection SMRAM Vulnerabilities CVSS 3.1HIGH 8.2
  • TI-2023-20671 Failure when uploading a Logo image file CVSS 3.1HIGH 7.8
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences