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CVE-2021-46753

28
FAUCET Score

CVE-2021-46753 is a critical vulnerability affecting AMD products, stemming from a failure to validate length fields in the AMD Secure Processor (ASP) sensor fusion hub headers. This allows an attacker, via a malicious Uapp or ABL, to overwrite data structures within the ASP sensor fusion hub region, potentially leading to a loss of confidentiality and integrity. With a CVSS score of 9.1 (Critical), it is easily exploitable over the network with low attack complexity, requiring no user interaction. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness and potential interest among researchers.

Impacted Technologies

VendorProductVersion(s)CPE
rembrandtpi-fp7_1.0.0.5CPE matchmatch criteria
cpe:2.3:o:amd:ryzen_6600h_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
rembrandtpi-fp7_1.0.0.5CPE matchmatch criteria
cpe:2.3:o:amd:ryzen_6600hs_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
rembrandtpi-fp7_1.0.0.5CPE matchmatch criteria
cpe:2.3:o:amd:ryzen_6600u_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
rembrandtpi-fp7_1.0.0.5CPE matchmatch criteria
cpe:2.3:o:amd:ryzen_6800h_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*
rembrandtpi-fp7_1.0.0.5CPE matchmatch criteria
cpe:2.3:o:amd:ryzen_6800hs_firmware:rembrandtpi-fp7_1.0.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 23rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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-4001
Vendor Advisory