How severe is CVE-2021-46792?

CVE-2021-46792 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-46792 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46792?

CVE-2021-46792 primarily affects Amd Ryzen 5300g 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-2021-46792?

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

When was CVE-2021-46792 published?

CVE-2021-46792 was published on 2023-05-09 and last updated on 2026-06-17.

CVE-2021-46792

CVE-2021-46792 is a medium-severity vulnerability in Amd Ryzen 5300g Firmware with a CVSS 3.x base score of 5.9. 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-367.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-367
Affected product: Amd Ryzen 5300g Firmware
Published: 2023-05-09
Last modified: 2026-06-17

Description

Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service.

Frequently asked questions

What is CVE-2021-46792?: Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service.
How severe is CVE-2021-46792?: CVE-2021-46792 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-46792 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46792?: CVE-2021-46792 primarily affects Amd Ryzen 5300g 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-2021-46792?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46792 published?: CVE-2021-46792 was published on 2023-05-09 and last updated on 2026-06-17.

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001

Affected products (99)

cpe:2.3:o:amd:ryzen_5300g_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300ge_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5500_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600g_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600ge_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600x_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700g_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700ge_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700x_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x3d_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900x_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5945wx_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5950x_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5955wx_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5965wx_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5975wx_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5995wx_firmware:cezannepi-fp6_1.0.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3100_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3100_firmware:picasso_pi-fp5_1.0.0.4:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3100_firmware:renoirpi-fp6_1.0.0.7:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3300x_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3300x_firmware:picasso_pi-fp5_1.0.0.4:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3300x_firmware:renoirpi-fp6_1.0.0.7:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500_firmware:picasso_pi-fp5_1.0.0.4:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500_firmware:renoirpi-fp6_1.0.0.7:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500x_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500x_firmware:picasso_pi-fp5_1.0.0.4:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500x_firmware:renoirpi-fp6_1.0.0.7:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600_firmware:picasso_pi-fp5_1.0.0.4:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600_firmware:renoirpi-fp6_1.0.0.7:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600x_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600x_firmware:picasso_pi-fp5_1.0.0.4:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600x_firmware:renoirpi-fp6_1.0.0.7:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3600xt_firmware:comboam4v2_pi_1.2.0.5:*:*:*:*:*:*:*

More vulnerabilities in Amd Ryzen 5300g Firmware

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