How severe is CVE-2021-46765?

CVE-2021-46765 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-46765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46765?

CVE-2021-46765 primarily affects Amd Ryzen 6600h Firmware. In total, 78 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46765?

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-2021-46765 published?

CVE-2021-46765 was published on 2023-05-09 and last updated on 2026-06-17.

CVE-2021-46765

CVE-2021-46765 is a high-severity vulnerability in Amd Ryzen 6600h Firmware with a CVSS 3.x base score of 7.5. 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Amd Ryzen 6600h Firmware
Published: 2023-05-09
Last modified: 2026-06-17

Description

Insufficient input validation in ASP may allow an attacker with a compromised SMM to induce out-of-bounds memory reads within the ASP, potentially leading to a denial of service.

Frequently asked questions

What is CVE-2021-46765?: Insufficient input validation in ASP may allow an attacker with a compromised SMM to induce out-of-bounds memory reads within the ASP, potentially leading to a denial of service.
How severe is CVE-2021-46765?: CVE-2021-46765 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-46765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46765?: CVE-2021-46765 primarily affects Amd Ryzen 6600h Firmware. In total, 78 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-46765?: 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-2021-46765 published?: CVE-2021-46765 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 (78)

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_5300g_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300ge_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300ge_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5500_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5500_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600g_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600g_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600ge_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600ge_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600x_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700g_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700g_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700ge_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700ge_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700x_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x3d_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x3d_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900x_firmware:cezannepi-fp6_1.0.0.b:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900x_firmware:comboam4v2_pi_1.2.0.8:*:*:*:*:*:*:*

More vulnerabilities in Amd Ryzen 6600h Firmware

CVE-2021-46753 — Critical (CVSS 9.1): Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker…
CVE-2021-46773 — High (CVSS 8.8): Insufficient input validation in ABL may enable a privileged attacker to corrupt ASP memory, potentially resulting in a…
CVE-2023-20597 — Medium (CVSS 5.5): Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via…
CVE-2023-20594 — Medium (CVSS 4.4): Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via…

All CVEs affecting Amd Ryzen 6600h Firmware →

Other CWE-125 (Out-of-bounds Read) vulnerabilities

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CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

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