Is CVE-2021-46747 in the CISA KEV catalog?

No. CVE-2021-46747 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-46747?

CVE-2021-46747 has a CVSS v4 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2021-46747?

CVE-2021-46747 has an EPSS score of 0.10% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-46747?

No published fix for CVE-2021-46747 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-46747

HIGH

7.1

CVSS v4

NVD

Description

Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN (System Management Network) apertures leading to a potential escalation of privileges.

CWE-1220

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v4 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

Impact

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Intelligence

0.10%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-1220 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-31201	Critical	9.8	15%	KEV	Fix
CVE-2026-33825	High	7.8	6.7%	KEV + Ransom	Fix
CVE-2024-42365	High	7.4	4.7%	-	Fix
CVE-2026-39363	High	7.5	2.9%	-	Fix
CVE-2026-49170	High	7.8	2.8%	-	Fix
CVE-2023-43040	Medium	6.5	2.5%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.