Vulnerability in AMD 1st Gen Epyc™ Processors
CVE-2021-26371
A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information disclosure.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- AMD 1st Gen Epyc™ Processors — versions various
- AMD 2nd Gen Epyc™ Processors — versions various
- AMD 3rd Gen Epyc™ Processors — versions various
- AMD 3rd Gen Ryzen™ Threadripper™ Processors “Castle Peak” Hedt — versions various
- AMD 3015ce
- AMD 3015ce Firmware
- AMD 3015e
- AMD 3015e Firmware
- AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” Am4 — versions various
- AMD Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics “Dali”/”dali” Ulp — versions various
References
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 (vendor-advisory, Vendor Advisory)
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26371?
- CVE-2021-26371 is a medium-severity vulnerability in AMD 1st Gen Epyc™ Processors. CVSS score: 5.5/10. Published 2023-05-09.
- How severe is CVE-2021-26371?
- Medium severity. CVSS v3 base score is 5.5 out of 10.