CVE-2021-46744: amd amd processors Observable Discrepancy
Vulnerability summary
CVE-2021-46744 is a medium (CVSS 6.5) Observable Discrepancy vulnerability in amd amd processors. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 26.7% of scored vulnerabilities.
Not severe (CVSS 6.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 40 · Related 40Timeline
- 11-05-2022PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
An attacker with access to a malicious hypervisor may be able to infer data values used in a SEV guest on AMD CPUs by monitoring ciphertext values over time.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
27%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.33% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Amd100 products
- amd processorsProcessor EPYC
- epyc_7001_firmwarena
- epyc_7002_firmwarena
- epyc_7003_firmwarena
- epyc_7232p_firmwarena
1 vendor · 100 products