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CVE-2021-26371

20
FAUCET Score

CVE-2021-26371 describes an information disclosure vulnerability affecting AMD products, where a compromised or malicious ABL or UApp can expose ASP memory to userspace through a SHA256 system call to the bootloader. This local attack, requiring low privileges and no user interaction, has a CVSS score of 5.5 (Medium) due to the high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< milanpi_1.0.0.6CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.6CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.6CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.6CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.6CPE matchmatch criteria
cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 44th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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
amd.com / en/corporate/product-security/bulletin/AMD-SB-4001
Vendor Advisory