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CVE-2022-23821

CRITICALCVSS 9.8/10EPSS 0.99%

Last modified

CVE-2022-23821 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Improper access control in System Management Mode (SMM) may allow an attacker to write to SPI ROM potentially leading to arbitrary code execution. . EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

Improper access control in System Management Mode (SMM) may allow an attacker to write to SPI ROM potentially leading to arbitrary code execution.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.99%

58.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
AmdRyzen 9 3900 Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 9 3900 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 3900x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 9 3900x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 3900xt Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 9 3900xt Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 3950x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 9 3950x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 3700x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 7 3700x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 3800x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 7 3800x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 3800xt Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 7 3800xt Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 3500 Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 3500 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 3500x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 3500x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 3600 Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 3600 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 3600x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 3600x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 3600xt Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 3600xt Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 3 3100 Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 3 3100 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 3 3300x Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 3 3300x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 5900 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 5900x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 5950x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 9 Pro 5945 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 Pro 5845 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 5800 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 5800x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 7 5700x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 5600 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 5600x Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 56003xd Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 Pro 5645 Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 5500 Firmwarecomboam4v2_pi_1.2.0.8
AmdRyzen 5 5500x Firmwarecomboam4v2_pi_1.2.0.8
AmdRyzen 5 55003xd Firmwarecomboam4v2_pi_1.2.0.8
AmdRyzen 7 5700 Firmwarecomboam4v2_pi_1.2.0.8
AmdRyzen 3 5100 Firmwarecomboam4v2_pi_1.2.0.8
AmdRyzen 5 Pro 3400g Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 Pro 3400g Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 Pro 3400ge Firmwarecomboam4_pi_1.0.0.9
AmdRyzen 5 Pro 3400ge Firmwarecomboam4_v2_pi_1.2.0.8
AmdRyzen 5 Pro 3350g Firmwarecomboam4_pi_1.0.0.9

Showing 50 of 126 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-23821?
Improper access control in System Management Mode (SMM) may allow an attacker to write to SPI ROM potentially leading to arbitrary code execution.
How severe is CVE-2022-23821?
CVE-2022-23821 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.
How do I fix CVE-2022-23821?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-23821?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST