CVE-2021-26323: amd 3rd gen amd epyc™ Improper Input Validation
CVSS: 7.8v3.1HighModified
Published 16-11-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-26323 is a high (CVSS 7.8) Improper Input Validation vulnerability in amd 3rd gen amd epyc™. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 14.8% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 16-11-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Failure to validate SEV Commands while SNP is active may result in a potential impact to memory integrity.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
0.00 pp
From 0.25% on 19-09-2026
19-09-202619-10-2026
EPSS score0.25%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Amd21 products
- 3rd gen amd epyc™≥ unspecified, < MilanPI-SP3_1.0.0.4
- epyc_7232p_firmware< romepi-sp3_1.0.0.c
- epyc_72f3_firmware< milanpi-sp3_1.0.0.4
- epyc_7313_firmware< milanpi-sp3_1.0.0.4
- epyc_7313p_firmware< milanpi-sp3_1.0.0.4
1 vendor · 21 products