CVE-2026-3821: Supermicro SMASH service contain an Arbitrary code execution issue
Published Jul 22, 2026
·Updated
Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI. An authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC.
Affected Software
1 affected component
Supermicro SMASH services
Event History
Jul 22, 2026
CVE Published
via MITRE·06:15 AM
Data Sourced
via MITRE·06:15 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:16 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-3821?
The severity of CVE-2026-3821 is high with a CVSS score of 8.8.
2
How do I fix CVE-2026-3821?
To fix CVE-2026-3821, apply the security updates provided by Supermicro for SMASH services.
3
What type of vulnerability is CVE-2026-3821?
CVE-2026-3821 is classified as an Arbitrary Code Execution vulnerability.
4
Can CVE-2026-3821 lead to data compromise?
Yes, CVE-2026-3821 can compromise data integrity due to its ability to execute arbitrary code.
5
Who is affected by CVE-2026-3821?
Supermicro SMASH service users, particularly those with X14DBG-DAP and X14DBI systems, are affected by CVE-2026-3821.