CVE-2026-3821
Supermicro SMASH service contain an Arbitrary code execution issue
Description
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.
INFO
Published Date :
July 22, 2026, 7:16 a.m.
Last Modified :
July 22, 2026, 7:16 a.m.
Remotely Exploit :
Yes !
Source :
def9a96e-e099-41a9-bfac-30fd4f82c411
Affected Products
The following products are affected by CVE-2026-3821
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | def9a96e-e099-41a9-bfac-30fd4f82c411 |
Solution
- Update Supermicro SMASH services to the latest version.
- Apply vendor patches for X14DBG-DAP and X14DBI.
- Restrict access to SMASH services.
- Monitor for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-3821.
| URL | Resource |
|---|---|
| https://www.supermicro.com/en/support/security_BMC_IPMI_Jul_2026 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-3821 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-3821
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3821 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-3821 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by def9a96e-e099-41a9-bfac-30fd4f82c411
Jul. 22, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'SMCI', 'product': 'X14DBG-DAP,X14DBI', 'versions': [{'status': 'affected', 'version': '01.00.16.00'}, {'status': 'affected', 'version': '1.03.02.06'}], 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 Added Reference https://www.supermicro.com/en/support/security_BMC_IPMI_Jul_2026