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CVE-2026-16521— Supermicro BMC's syslog feature contains a command injection vulnerability

Quick assessment

Affected
SMCI MBD-X12STW-F
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

由于输入过滤不足，存在操作系统命令注入漏洞。攻击者可将命令载荷注入到 BMC（基板管理控制器）功能中；当相关服务重启时，该载荷可能会被执行。

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1059.006 · Python
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I. Basic Information for CVE-2026-16521

Vulnerability Information
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Vulnerability Title
Supermicro BMC's syslog feature contains a command injection vulnerability
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SMCI MBD-X12STW-F 01.02.08 -

II. Public POCs for CVE-2026-16521

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III. Intelligence Information for CVE-2026-16521

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Other References for CVE-2026-16521 (1)

Same Patch Batch · SMCI · 2026-10-27 · 9 CVEs total

CVE-2026-18450 9.8 CRITICAL Supermicro BMC contains Unprotected IPMI Commands Accepted on Active RMCP+ Sessions vulne
CVE-2026-65220 8.8 HIGH Supermicro BMC IPMI feature contains a Privilege escalation vulnerability
CVE-2026-18449 7.5 HIGH Supermicro BMC contains a SMCRAKP Fixed Key vulnerability
CVE-2026-65219 7.4 HIGH Supermicro BMC contains Unordered RAKP Message 3 Grants an IPMI Session vulnerability
CVE-2026-65211 7.2 HIGH Supermicro BMC IPMI feature contains Critical Privilege Escalation and Arbitrary Access v
CVE-2026-65213 6.6 MEDIUM Supermicro BMC IPMI feature contains a Arbitrary Command Execution with Superuser Privileg
CVE-2026-65210 4.9 MEDIUM Supermicro BMC IPMI feature contains Arbitrary File Access vulnerability
CVE-2026-18451 3.1 LOW Supermicro BMC's iKVM feature is vulnerable to KVM session hijacking due to a predictable

IV. Related Vulnerabilities

Same vendor: SMCI
Same weakness: CWE-78