Improper input validation in AMD 1st Gen Epyc
CVE-2021-26316
Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- AMD 1st Gen Epyc — versions various
- AMD 2nd Gen Epyc — versions Various
- AMD 3rd Gen Epyc — versions various
- AMD Athlon 3050ge
- AMD Athlon 3050ge Firmware
- AMD Athlon 3150g
- AMD Athlon 3150ge
- AMD Athlon 3150ge Firmware
- AMD Athlon 3150g Firmware
- AMD Athlon Gold 3150c
Weakness classification (CWE)
References
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031 (vendor-advisory, Vendor Advisory)
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26316?
- CVE-2021-26316 is a high-severity vulnerability in AMD 1st Gen Epyc, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2023-01-11.
- How severe is CVE-2021-26316?
- High severity. CVSS v3 base score is 7.8 out of 10.