What is CVE-2021-46744?

CVE-2021-46744 is a medium-severity vulnerability in Amd Processors, classified under Observable Discrepancy. CVSS score: 6.5/10. Published 2022-05-11.

How severe is CVE-2021-46744?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-46744 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Amd Processors

CVE-2021-46744

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.

EPSS: 0.003 (24.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Amd Processors — versions Processor EPYC
Amd Epyc_7001
Amd Epyc_7001_firmware
Amd Epyc_7002
Amd Epyc_7002_firmware
Amd Epyc_7003
Amd Epyc_7003_firmware
Amd Epyc_7232p
Amd Epyc_7232p_firmware
Amd Epyc_7251

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

Public proof-of-concept exploits

References

psirt@amd.com (x_refsource_MISC, Vendor Advisory)
psirt@amd.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46744?: CVE-2021-46744 is a medium-severity vulnerability in Amd Processors, classified under Observable Discrepancy. CVSS score: 6.5/10. Published 2022-05-11.
How severe is CVE-2021-46744?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-46744 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.