Improper input validation in AMD 2nd Gen Epyc™
CVE-2021-26370
Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.2% 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 2nd Gen Epyc™ — versions unspecified
- AMD 3rd Gen Epyc™ — versions unspecified
- AMD Epyc 7002
- AMD Epyc 7002 Firmware
- AMD Epyc 7232p
- AMD Epyc 7232p Firmware
- AMD Epyc 7252
- AMD Epyc 7252 Firmware
- AMD Epyc 7262
- AMD Epyc 7262 Firmware
Weakness classification (CWE)
References
- www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26370?
- CVE-2021-26370 is a high-severity vulnerability in AMD 2nd Gen Epyc™, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2022-05-10.
- How severe is CVE-2021-26370?
- High severity. CVSS v3 base score is 7.1 out of 10.