CVE-2026-33554
Zhihan Zheng discovered that FreeIPMI had several buffer overflow vulnerabilities in ipmi-oem response message handling. A local attacker with control a malicious IPMI device or simulator could possibly cause FreeIPMI to crash, resulting in a denial of service. (CVE-2026-33554, CVE-2026-50031)
CSIRTS triage
- What
- Several buffer overflow vulnerabilities could cause FreeIPMI to crash.
- Who is affected
- Local attackers with control over a malicious IPMI device or simulator.
- Urgency
- Remediation is necessary to prevent denial of service.
- Action
- Apply updates as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[UPDATE] [high] Red Hat Enterprise Linux (freeipmi): Vulnerability allows code executioncert-bund · 2026-07-31
- unknownUSN-8613-1: FreeIPMI vulnerabilitiesubuntu · 2026-07-27
External references
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[](https://www.csirts.com/cve/CVE-2026-33554)