A potential vulnerability exists in AMD Platform Security Processor (PSP) that may allow an attacker to zero any privileged register on the System Management Network which may lead to bypassing SPI ROM protections.
CVSS v4.0 Metrics
Exploitability
Attack VectorLocal
ComplexityLow
RequirementsPresent
PrivilegesLow
User InteractionNone
Threat
Exploit MaturityUnreported
Vulnerable System
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | nvd | AV: P→L, AC: H→L, PR: H→L, UI: A→N, VC: N→H, VI: N→H, VA: N→H | 0.0 → 4.4 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 0.0 |
Affected Software
| Vendor | Product | Version |
|---|
| AMD | 2nd Gen AMD EPYC™ | < RomePI-SP3_1.0.0.C |
| AMD | 3rd Gen AMD EPYC™ | < MilanPI-SP3_1.0.0.4 |
| amd | epyc_7002_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7003_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7232p_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7252_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7262_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7272_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7282_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_72f3_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7302_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7302p_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7313_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7313p_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7343_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7352_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_73f3_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7402_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7402p_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7413_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7443_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7443p_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7452_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7453_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_74f3_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7502_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7502p_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7513_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7532_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7542_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7543_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7543p_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7552_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_75f3_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7642_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7643_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7662_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7663_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7702_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7702p_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7713_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7713p_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7742_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7763_firmware | < milanpi-sp3_1.0.0.4 |
| amd | epyc_7f32_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7f52_firmware | < romepi-sp3_1.0.0.c |
| amd | epyc_7f72_firmware | < romepi-sp3_1.0.0.c |
Published: 2021-11-16
