Auth bypass in AMD Athlon™ 3000 Series Desktop Processors With Radeon™ Graphics
CVE-2021-26387
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.001 (3.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- AMD Athlon™ 3000 Series Desktop Processors With Radeon™ Graphics — versions ComboAM4PI 1.0.0.9, ComboAM4v2 PI 1.2.0.8
- AMD Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics — versions PicassoPI-FP5 1.0.0.E, PollockPI-FT5 1.0.0.4
- AMD Epyc™ 7001 Series Processors — versions various
- AMD Epyc™ 7002 Series Processors — versions various
- AMD Epyc™ 7003 Series Processors — versions various
- AMD Epyc™ 9004 Series Processors — versions various
- AMD Epyc™ Embedded 3000 Series Processors — versions various
- AMD Epyc™ Embedded 7002 Series Processors — versions various
- AMD Epyc™ Embedded 7003 Series Processors — versions various
- AMD Epyc™ Embedded 9003 Series Processors — versions various
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2021-26387?
- CVE-2021-26387 is a low-severity vulnerability in AMD Athlon™ 3000 Series Desktop Processors With Radeon™ Graphics, classified under Incorrect Authorization. CVSS score: 3.9/10. Published 2024-08-13.
- How severe is CVE-2021-26387?
- Low severity. CVSS v3 base score is 3.9 out of 10.