CVE-2023-20563
HIGH
7.8
CVSS Score
Published: November 14, 2023 at 06:54 PM UTC
Updated: June 17, 2026 at 05:30 AM UTC
156 products affected across 1 vendorRyzen 5 5600U FirmwareRyzen 5 5600HS FirmwareRyzen 5 5600H Firmware
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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
Description
Insufficient protections in System Management Mode (SMM) code may allow an attacker to potentially enable escalation of privilege via local access.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < comboam4v2_1.2.0.b
Affected range stops below comboam4v2_1.2.0.b, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-5100 (same device)
v < cezannepi-fp6_1.0.0.f
Affected range stops below cezannepi-fp6_1.0.0.f, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-5125c (same device)
v < comboam4v2_1.2.0.b
Affected range stops below comboam4v2_1.2.0.b, so it looks safe — our inference, not a vendor statement
v < comboam4v2_1.2.0.b
Affected range stops below comboam4v2_1.2.0.b, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-5300ge (same device)
v < cezannepi-fp6_1.0.0.f
Affected range stops below cezannepi-fp6_1.0.0.f, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-5400u (same device)
v < cezannepi-fp6_1.0.0.f
Affected range stops below cezannepi-fp6_1.0.0.f, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-5425u (same device)
v < rembrandtpi-fp7_1.0.0.9
Affected range stops below rembrandtpi-fp7_1.0.0.9, so it looks safe — our inference, not a vendor statement
v < cezannepi-fp6_1.0.0.f
Affected range stops below cezannepi-fp6_1.0.0.f, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-pro-7330u (same device)
v < phoenixpi-fp8-fp7_pi_1.0.0.1g
Affected range stops below phoenixpi-fp8-fp7_pi_1.0.0.1g, so it looks safe — our inference, not a vendor statement
amd-ryzen-3-pro-7440u (same device)
v < comboam4v2_1.2.0.b
Affected range stops below comboam4v2_1.2.0.b, so it looks safe — our inference, not a vendor statement
amd-ryzen-5-5500 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
Vendor Advisory
Source: [email protected]
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002Vendor Advisory
Source: [email protected]
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-269
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