CVE-2022-26873 Memory corruption in Aptio
A stack buffer overflow in AMI Aptio firmware allows attackers to execute arbitrary code during boot, bypassing security mitigations and exposing secrets.
- 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-2022-26873?
CVE-2022-26873 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: PlatformInitAdvancedPreMem SHA256: 644044fdb8daea30a7820e0f5f88dbf5cd460af72fbf70418e9d2e47efed8d9b Module GUID: EEEE611D-F78F-4FB9-B868-55907F169280 This issue affects: AMI Aptio 5.x.
Which versions are affected by CVE-2022-26873?
It affects 3 products.
Products include Ami Aptio V, Intel Nuc M15 Laptop Kit Lapbc510 Firmware, Intel Nuc M15 Laptop Kit Lapbc710 Firmware.
How do I fix CVE-2022-26873?
No fix has been published for CVE-2022-26873 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-2022-26873 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-26873 exists.
Other vulnerabilities in AMI Aptio
- CVE-2022-40250 Stack overflow vulnerability in SMI handler on SmmSmbiosElog.
- CVE-2025-33045 Legacy Serial Redirection SMRAM Vulnerabilities
- CVE-2022-40261 SMM memory corruption vulnerability in OverClockSmiHandler SMM driver
- CVE-2022-40262 The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase.
- CVE-2024-33656 Memory Leak in SmmComuptrace Module
Sources
Also known as GHSA-8vmj-6582-mgcq.