CVE intelligence and bounded remediation

CVE-2023-33411 — Supermicro M11Sdv-4C-Ln4F Firmware security vulnerability

High CVSS 7.5

A web server in the Intelligent Platform Management Interface (IPMI) baseboard management controller (BMC) implementation on Supermicro X11 and M11 based devices, with firmware versions up to 3.17.02, allows remote unauthenticated users to perform directory traversal, potentially disclosing sensitive information.

Severity
High
CVSS
7.5 (3.1)
Published
2023-12-07
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-22

Affected products

  • supermicro / m11sdv-4c-ln4f_firmware
  • supermicro / m11sdv-4ct-ln4f_firmware
  • supermicro / m11sdv-8c-ln4f_firmware
  • supermicro / m11sdv-8ct-ln4f_firmware
  • supermicro / m11sdv-8c+-ln4f_firmware
  • supermicro / c9x299-pg_firmware

Showing 6 representative product identities from 362 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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