CVE-2021-26384 json
A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, poten…
published 2022-07-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13190
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory reads and writes when triggering an SMI resulting in a potential loss of resources.
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
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- AMD Ryzen™ Series
- AMD Athlon™ Series
Classification
References
-
amd.com
/en/corporate/product-security/bulletin/amd-sb-1027
vendor-advisory
Sources
- CVE List CVE-2021-26384
- NVD CVE-2021-26384
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.