CVE-2022-23820

No known exploitation. EPSS puts it in the 51st percentile. A vendor fix is available.

Published 2023-11-14Updated 2024-11-21Sources: CVE.org, NVD, BDU

What to do

The vendor has published a fix. Version details are below where the sources state them.

Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution.

No plain-language summary for this CVE yet.

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS51st

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.7% chance of exploitation activity in the next 30 days, which ranks it in the 51st percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

6 events over 954 days, from the signal feeds we watch.

And 126 more affected products. See all after sign-in

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

Scored 7.5 by NVD.

Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
Privileges Required HighRequires admin or elevated privileges
User Interaction NoneNo user interaction needed — fully automated exploitation

Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)

Confidentiality HighTotal information disclosure — all data in the component is compromised
Integrity HighTotal loss of integrity — attacker can modify any data in the component
Availability HighTotal denial of service — the component is completely unavailable