CVE-2021-26315
HIGH
7.8
CVSS Score
Published: November 16, 2021 at 06:12 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
40 products affected across 1 vendorEpyc 7663 FirmwareEpyc 7713P FirmwareEpyc 7413 Firmware
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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
Description
When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary code may be executed in the PSP when encrypted firmware images are used.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
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 < 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
amd-epyc-72f3 (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
amd-epyc-7313 (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
amd-epyc-7313p (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
amd-epyc-7343 (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
amd-epyc-73f3 (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
amd-epyc-7413 (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
amd-epyc-7443 (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
amd-epyc-7443p (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
amd-epyc-7453 (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-345
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