Buffer overflow in Ami Aptio
CVE-2022-26873
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html (Third Party Advisory, Not Applicable)
- www.binarly.io/advisories/BRLY-2022-027 (Exploit, Third Party Advisory)
- www.ami.com/security-center/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-26873?
- CVE-2022-26873 is a high-severity vulnerability in Ami Aptio, classified under Stack-based Buffer Overflow. CVSS score: 8.2/10. Published 2022-09-20.
- How severe is CVE-2022-26873?
- High severity. CVSS v3 base score is 8.2 out of 10.