How severe is CVE-2021-46773?

CVE-2021-46773 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-46773 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46773?

CVE-2021-46773 primarily affects Amd Ryzen 6600h Firmware. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46773?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-46773 published?

CVE-2021-46773 was published on 2023-05-09 and last updated on 2026-06-17.

CVE-2021-46773

CVE-2021-46773 is a high-severity vulnerability in Amd Ryzen 6600h Firmware with a CVSS 3.x base score of 8.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Amd Ryzen 6600h Firmware
Published: 2023-05-09
Last modified: 2026-06-17

Description

Insufficient input validation in ABL may enable a privileged attacker to corrupt ASP memory, potentially resulting in a loss of integrity or code execution.

Frequently asked questions

What is CVE-2021-46773?: Insufficient input validation in ABL may enable a privileged attacker to corrupt ASP memory, potentially resulting in a loss of integrity or code execution.
How severe is CVE-2021-46773?: CVE-2021-46773 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-46773 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46773?: CVE-2021-46773 primarily affects Amd Ryzen 6600h Firmware. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-46773?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-46773 published?: CVE-2021-46773 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 (108)

cpe:2.3:o:amd:ryzen_6600h_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6600hs_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6600u_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6800h_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6800hs_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6800u_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6900hs_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6900hx_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6980hs_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_6980hx_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300g_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300ge_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5500_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600g_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600ge_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700g_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700ge_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x3d_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5945wx_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5950x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5955wx_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5965wx_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5975wx_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5995wx_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3100_firmware:comboam4pi_1.0.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3100_firmware:comboam4v2_pi_1.2.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3100_firmware:renoirpi-fp6_1.0.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3300x_firmware:comboam4pi_1.0.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3300x_firmware:comboam4v2_pi_1.2.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3300x_firmware:renoirpi-fp6_1.0.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500_firmware:comboam4pi_1.0.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500_firmware:comboam4v2_pi_1.2.0.6:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3500_firmware:renoirpi-fp6_1.0.0.8:*:*:*:*:*:*:*

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