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CVE-2021-26384

25
FAUCET Score

CVE-2021-26384 describes a vulnerability in AMD products where a malformed System Management Interface (SMI) command can corrupt the SMI Trigger Info data structure. This can lead to out-of-bounds memory reads and writes, resulting in a potential loss of system resources. With a CVSS score of 7.8 (HIGH), this vulnerability has a local attack vector with low complexity, allowing an attacker with low privileges to achieve high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< comboam4_v2_pi_1.2.0.6cCPE matchmatch criteria
cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*
< comboam4_v2_pi_1.2.0.6cCPE matchmatch criteria
cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
< comboam4_v2_pi_1.2.0.6cCPE matchmatch criteria
cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
< comboam4_v2_pi_1.2.0.6cCPE matchmatch criteria
cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
< comboam4_v2_pi_1.2.0.6cCPE matchmatch criteria
cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
10.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 38th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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-1027
Vendor Advisory