How severe is CVE-2021-46744?

CVE-2021-46744 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-46744 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46744?

CVE-2021-46744 primarily affects Amd Epyc 7001 Firmware. In total, 99 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46744?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46744 published?

CVE-2021-46744 was published on 2022-05-11 and last updated on 2026-06-17.

CVE-2021-46744

CVE-2021-46744 is a medium-severity vulnerability in Amd Epyc 7001 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Amd Epyc 7001 Firmware
Published: 2022-05-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-46744?: CVE-2021-46744 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-46744 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46744?: CVE-2021-46744 primarily affects Amd Epyc 7001 Firmware. In total, 99 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-46744?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46744 published?: CVE-2021-46744 was published on 2022-05-11 and last updated on 2026-06-17.

References

Affected products (99)

cpe:2.3:o:amd:epyc_7001_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7002_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7003_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7232p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7251_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7252_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7261_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7262_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7272_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7281_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7282_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7301_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7302_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7302p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7313_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7313p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7343_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7351_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7351p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7352_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7371_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7401_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7401p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7402_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7402p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7413_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7443_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7443p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7451_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7452_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7453_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7501_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7502_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7502p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7513_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7532_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7542_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7543_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7543p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7551_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Amd Epyc 7001 Firmware

CVE-2021-26340 — High (CVSS 8.4): A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to…
CVE-2021-26398 — High (CVSS 7.8): Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an…
CVE-2021-26335 — High (CVSS 7.8): Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to…
CVE-2021-26331 — High (CVSS 7.8): AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox…
CVE-2023-20578 — High (CVSS 7.5): A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or…
CVE-2020-12988 — High (CVSS 7.5): A potential denial of service (DoS) vulnerability exists in the integrated chipset that may allow a malicious attacker…

All CVEs affecting Amd Epyc 7001 Firmware →

Other CWE-203 (Observable Discrepancy) vulnerabilities

CVE-2019-25337 — Critical (CVSS 9.8): OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by…
CVE-2026-23519 — Critical (CVSS 9.8): RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in…
CVE-2025-27667 — Critical (CVSS 9.8): Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Administrative…
CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
CVE-2024-25191 — Critical (CVSS 9.8): php-jwt 1.0.0 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass…
CVE-2024-25190 — Critical (CVSS 9.8): l8w8jwt 2.2.1 uses memcmp (which is not constant time) to verify authentication, which makes it easier to bypass…

Browse all CWE-203 (Observable Discrepancy) vulnerabilities →