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CVE-2021-46763

23
FAUCET Score

CVE-2021-46763 is an insufficient input validation vulnerability in the System Management Unit (SMU) affecting AMD products. A privileged attacker can exploit this to write beyond the intended bounds of a shared memory buffer, potentially leading to a loss of integrity. With a CVSS score of 7.5 (HIGH), this vulnerability has a low attack complexity and can be exploited remotely, but it does not impact confidentiality or availability. There is currently no public exploit code available, nor is there any evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
milanpi_1.0.0.9CPE matchmatch criteria
cpe:2.3:o:amd:epyc_72f3_firmware:milanpi_1.0.0.9:*:*:*:*:*:*:*
milanpi_1.0.0.9CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7313_firmware:milanpi_1.0.0.9:*:*:*:*:*:*:*
milanpi_1.0.0.9CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7313p_firmware:milanpi_1.0.0.9:*:*:*:*:*:*:*
milanpi_1.0.0.9CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7343_firmware:milanpi_1.0.0.9:*:*:*:*:*:*:*
milanpi_1.0.0.9CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7373x_firmware:milanpi_1.0.0.9:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 18th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

amd.com / en/corporate/product-security/bulletin/AMD-SB-3001
Vendor Advisory