CVE-2021-26384: AMD Athlon Gold 3150u Firmware

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

  • AMD Athlon Gold 3150u Firmware: affected versions not specified
  • AMD Athlon Silver 3050u Firmware: affected versions not specified
  • AMD Ryzen 3 2200u Firmware: before comboam4v2_pi_1.2.0.6c (fixed in comboam4v2_pi_1.2.0.6c)
  • AMD Ryzen 3 2300u Firmware: before comboam4v2_pi_1.2.0.6c (fixed in comboam4v2_pi_1.2.0.6c)
  • AMD Ryzen 3 3200u Firmware: affected versions not specified
  • AMD Ryzen 3 3250u Firmware: affected versions not specified
  • AMD Ryzen 3 3300u Firmware: affected versions not specified
  • AMD Ryzen 3 3350u Firmware: affected versions not specified
  • AMD Ryzen 3 3450u Firmware: affected versions not specified
  • AMD Ryzen 3 3500c Firmware: affected versions not specified
  • AMD Ryzen 3 3500u Firmware: affected versions not specified
  • AMD Ryzen 3 3550h Firmware: affected versions not specified
  • AMD Ryzen 3 3580u Firmware: affected versions not specified
  • AMD Ryzen 3 3700c Firmware: affected versions not specified
  • AMD Ryzen 3 3700u Firmware: affected versions not specified
  • AMD Ryzen 3 3750h Firmware: affected versions not specified
  • AMD Ryzen 3 3780u Firmware: affected versions not specified
  • AMD Ryzen 3 5125c Firmware: before cezannepi-fp6_1.0.0.9 (fixed in cezannepi-fp6_1.0.0.9)
  • AMD Ryzen 3 5300g Firmware: before comboam4_v2_pi_1.2.0.6c (fixed in comboam4_v2_pi_1.2.0.6c)
  • AMD Ryzen 3 5300ge Firmware: before comboam4_v2_pi_1.2.0.6c (fixed in comboam4_v2_pi_1.2.0.6c)
  • AMD Ryzen 3 5400u Firmware: before cezannepi-fp6_1.0.0.9 (fixed in cezannepi-fp6_1.0.0.9)
  • AMD Ryzen 3 5425c Firmware: before cezannepi-fp6_1.0.0.9 (fixed in cezannepi-fp6_1.0.0.9)
  • AMD Ryzen 3 5425u Firmware: before cezannepi-fp6_1.0.0.9 (fixed in cezannepi-fp6_1.0.0.9)
  • AMD Ryzen 5 2500u Firmware: before comboam4v2_pi_1.2.0.6c (fixed in comboam4v2_pi_1.2.0.6c)
  • AMD Ryzen 5 2600 Firmware: before comboam4v2_pi_1.2.0.6c (fixed in comboam4v2_pi_1.2.0.6c)
  • and 27 more

Published 2022-07-14. Last modified 2026-06-17.