CVE-2026-16521
Supermicro BMC's syslog feature contains a command injection vulnerability
Description
An OS command injection vulnerability exists because of insufficient input filtering. An attacker can inject a command payload into a BMC function; the payload may execute when the related service is restarted.
INFO
Published Date :
Oct. 27, 2026, 8:16 a.m.
Last Modified :
Oct. 27, 2026, 8:16 a.m.
Remotely Exploit :
Yes !
Source :
def9a96e-e099-41a9-bfac-30fd4f82c411
Affected Products
The following products are affected by CVE-2026-16521
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 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Filter all user-supplied input to the BMC.
- Validate and sanitize all data before processing.
- Apply vendor patches when available.
- Restart affected services with caution.
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-2026-16521.
| URL | Resource |
|---|---|
| https://www.supermicro.com/en/support/security_BMC_IPMI_Oct_2026_2 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16521 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-2026-16521
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-2026-16521 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16521 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
Oct. 27, 2026
Action Type Old Value New Value Added Description An OS command injection vulnerability exists because of insufficient input filtering. An attacker can inject a command payload into a BMC function; the payload may execute when the related service is restarted. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16521.json">CVE-2026-16521</a> Added Reference https://www.supermicro.com/en/support/security_BMC_IPMI_Oct_2026_2