7.8

CVE-2021-26326: amd 3rd gen amd epyc™ Improper Initialization

CVSS: 7.8v3.1HighModified
Published 16-11-2021Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-26326 is a high (CVSS 7.8) Improper Initialization vulnerability in amd 3rd gen amd epyc™. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-11-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

0.00 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Amd21 products

1 vendor · 21 products

References

1 links