CVE-2021-46758

CVE-2021-46758 is a medium-severity vulnerability in Amd Ryzen 7 5700g Firmware with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 3.x base score 6.1)
• EPSS exploit prediction: 0% (24th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Amd Ryzen 7 5700g Firmware
• Published: 2023-11-14
• Last modified: 2026-06-17

Description

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

Frequently asked questions

What is CVE-2021-46758?

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

How severe is CVE-2021-46758?

CVE-2021-46758 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-46758 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46758?

CVE-2021-46758 primarily affects Amd Ryzen 7 5700g Firmware. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46758?

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

When was CVE-2021-46758 published?

CVE-2021-46758 was published on 2023-11-14 and last updated on 2026-06-17.

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002

Affected products (61)

• cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7950x3d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7900x3d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_7800x3d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_4900h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_4900hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4800h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4800hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4980u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4800u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4700u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4600h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4600hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4680u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4600u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4500u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_4300u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5700u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5500u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5300u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5980hx_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5980hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5900hx_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5900hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5800h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5800hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5825u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5800u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5625u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5560u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5500h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5425u_firmware:*:*:*:*:*:*:*:*

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