CVE-2021-26331
HIGH
7.8
CVSS Score
Published: November 16, 2021 at 06:09 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
116 products affected across 1 vendorEpyc 7713P FirmwareEpyc 7663 FirmwareEpyc 7413 Firmware
Using 1st Gen AMD EPYC™ by AMD?
Get instant alerts when new vulnerabilities affect 1st Gen AMD EPYC™ - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
Description
AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < naplespi-sp3_1.0.0.g
Affected range stops below naplespi-sp3_1.0.0.g, so it looks safe — our inference, not a vendor statement
amd-epyc-7001 (same device)
v < romepi-sp3_1.0.0.c
Affected range stops below romepi-sp3_1.0.0.c, so it looks safe — our inference, not a vendor statement
amd-epyc-7002 (same device)
v < milanpi-sp3_1.0.0.4
Affected range stops below milanpi-sp3_1.0.0.4, so it looks safe — our inference, not a vendor statement
v < romepi-sp3_1.0.0.c
Affected range stops below romepi-sp3_1.0.0.c, so it looks safe — our inference, not a vendor statement
amd-epyc-7232p (same device)
v < naplespi-sp3_1.0.0.g
Affected range stops below naplespi-sp3_1.0.0.g, so it looks safe — our inference, not a vendor statement
amd-epyc-7251 (same device)
v < romepi-sp3_1.0.0.c
Affected range stops below romepi-sp3_1.0.0.c, so it looks safe — our inference, not a vendor statement
amd-epyc-7252 (same device)
v < romepi-sp3_1.0.0.c
Affected range stops below romepi-sp3_1.0.0.c, so it looks safe — our inference, not a vendor statement
amd-epyc-7262 (same device)
v < romepi-sp3_1.0.0.c
Affected range stops below romepi-sp3_1.0.0.c, so it looks safe — our inference, not a vendor statement
amd-epyc-7272 (same device)
v < naplespi-sp3_1.0.0.g
Affected range stops below naplespi-sp3_1.0.0.g, so it looks safe — our inference, not a vendor statement
amd-epyc-7281 (same device)
v < romepi-sp3_1.0.0.c
Affected range stops below romepi-sp3_1.0.0.c, so it looks safe — our inference, not a vendor statement
amd-epyc-7282 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card