CVE-2023-20558
High
Published: 02 April 2023
Published
02 April 2023
Modified
20 February 2025
KEV Added
—
Patch
—
CVSS Score v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0039
60.7th percentile
Risk Priority
18
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2023-20558 is a high-severity Always-Incorrect Control Flow Implementation (CWE-670) vulnerability in Amd Ryzen 7 5700G Firmware. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 39.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-24737
Vulnerability details
Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalation of privileges.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
amd
ryzen 7 5700g firmware
≤ comboam4_v2_pi_1.2.0.6c
amd
ryzen 7 5700ge firmware
≤ comboam4_v2_pi_1.2.0.6c
amd
ryzen 5 5600g firmware
≤ comboam4_v2_pi_1.2.0.6c
amd
ryzen 5 5600ge firmware
≤ comboam4_v2_pi_1.2.0.6c
amd
ryzen 3 5300g firmware
≤ comboam4_v2_pi_1.2.0.6c
amd
ryzen 3 5300ge firmware
≤ comboam4_v2_pi_1.2.0.6c
amd
ryzen 9 5980hx firmware
≤ cezannepi-fp6_1.0.0.9
amd
ryzen 9 5980hs firmware
≤ cezannepi-fp6_1.0.0.9
amd
ryzen 7 5825u firmware
≤ cezannepi-fp6_1.0.0.9
amd
ryzen 9 5900hx firmware
≤ cezannepi-fp6_1.0.0.9
+79 more product configuration(s) — see NVD for full list
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.