CVE-2023-20558 json
Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to…
published 2023-03-23 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24737
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalation of privileges.
Patch / fix
- 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
- amd ryzen_9_5900hs_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_7_5825c_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_7_5800h_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_5_5625u_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_7_5800hs_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_5_5625c_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_5_5600h_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_5_5600hs_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_7_5800u_firmware cezannepi-fp6_1.0.0.9
- amd ryzen_5_5600u_firmware cezannepi-fp6_1.0.0.9
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 20 mo ago
Exploit prediction
0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- AMD Ryzen™ 2000 Series
- AMD Ryzen™ 3000 Series
- AMD Ryzen™ 4000 Series
- AMD Ryzen™ 5000 Series
- AMD 2nd Gen AMD Ryzen™ Threadripper™ Processor
- AMD 3rd Gen AMD Ryzen™ Threadripper™ Processors
- AMD Ryzen™ Threadripper™ PRO Processor
Classification
- Weakness
-
- CWE-670 Always-Incorrect Control Flow Implementation
References
-
amd.com
/en/resources/product-security/bulletin/amd-sb-1027.html
vendor-advisory
Sources
- CVE List CVE-2023-20558
- NVD CVE-2023-20558
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.