CVE-2021-26370: amd 2nd gen amd epyc™ Improper Input Validation
CVSS: 7.1v3.1HighModified
Published 10-05-2022Last modified 16-09-2024
Vulnerability summary
CVE-2021-26370 is a high (CVSS 7.1) Improper Input Validation vulnerability in amd 2nd gen amd epyc™. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13% of scored vulnerabilities.
CVSS score
7.1/10
010
High · v3.1 (NVD)EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 10-05-2022PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.1Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HSourcesSingle source
Medium 6.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
0.00 pp
From 0.23% on 19-09-2026
19-09-202619-10-2026
EPSS score0.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Amd51 products
- 2nd gen amd epyc™≥ unspecified, < RomePI-SP3_1.0.0.C
- 3rd gen amd epyc™≥ unspecified, < MilanPI-SP3_1.0.0.4
- epyc_7002_firmware< romepi-sp3_1.0.0.c
- epyc_7232p_firmware< romepi-sp3_1.0.0.c
- epyc_7252_firmware< romepi-sp3_1.0.0.c
1 vendor · 51 products