CVE-2021-46791
CVE-2021-46791 is a medium-severity vulnerability in Amd Milanpi Firmware with a CVSS 3.x base score of 5.5. 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-787.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Amd Milanpi Firmware
- Published:
- Last modified:
Description
Insufficient input validation during parsing of the System Management Mode (SMM) binary may allow a maliciously crafted SMM executable binary to corrupt Dynamic Root of Trust for Measurement (DRTM) user application memory that may result in a potential denial of service.
Frequently asked questions
- What is CVE-2021-46791?
- Insufficient input validation during parsing of the System Management Mode (SMM) binary may allow a maliciously crafted SMM executable binary to corrupt Dynamic Root of Trust for Measurement (DRTM) user application memory that may result in a potential denial of service.
- How severe is CVE-2021-46791?
- CVE-2021-46791 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-46791 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-46791?
- CVE-2021-46791 affects Amd Milanpi Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-46791?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-46791 published?
- CVE-2021-46791 was published on 2023-01-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Amd Milanpi Firmware
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- CVE-2021-46779 — High (CVSS 7.1): Insufficient input validation in SVC_ECC_PRIMITIVE system call in a compromised user application or ABL may allow an…
- CVE-2021-46767 — Medium (CVSS 6.1): Insufficient input validation in the ASP may allow an attacker with physical access, unauthorized write access to…
- CVE-2021-46768 — Medium (CVSS 5.5): Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the…
- CVE-2023-20519 — Low (CVSS 3.3): A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to…
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