CVE-2021-46744

MEDIUMNVD 6.56.5—

6.5

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 v3: 6.5
EG Score: 6.5(medium)
EPSS: 28.0%
KEV: Not listed

Published

May 11, 2022

Last Modified

November 21, 2024

References (4)

psirt@amdhttp://www.openwall.com/lists/oss-security/2022/08/08/6
psirt@amdhttps://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1033
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/08/08/6
af854a3a-2127-422b-91ae-364da2661108https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1033

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 22:23 UTCEG score recompute
2026-05-25 22:23 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-46744?

CVE-2021-46744 is a medium vulnerability published on May 11, 2022. 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.

When was CVE-2021-46744 disclosed?

CVE-2021-46744 was first published in the National Vulnerability Database on May 11, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-46744 actively exploited?

CVE-2021-46744 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-46744?

CVE-2021-46744 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2021-46744?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-46744, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-46744

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-46744?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)