CVE-2026-85504
Description
A flaw was found in FreeIPMI. This vulnerability, a stack-based buffer overflow, occurs when the software processes malformed Fujitsu System Event Log (SEL) responses. An attacker could exploit this by providing specially crafted SEL data, potentially requiring user interaction, to achieve arbitrary code execution.
Statement
A stack-based buffer overflow in FreeIPMI allows for arbitrary code execution when processing malformed Fujitsu System Event Log (SEL) responses. This vulnerability is restricted to a Moderate severity rating due to its elevated attack complexity: successful exploitation requires an attacker to successfully inject specially crafted SEL data and relies on active user interaction to trigger the vulnerable code path, significantly lowering the likelihood of an automated or widespread attack.
Mitigation
Restrict IPMI and BMC access to a dedicated, trusted management network so FreeIPMI SEL tools cannot reach untrusted or compromised Fujitsu controllers. Please do not run ipmi-sel with OEM interpretation (--interpret-oem-data) against untrusted BMCs, and do not enable interpret-oem-data in ipmiseld for those hosts. If Fujitsu OEM long-text SEL decoding is not required, leave that option off.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 9.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the program into an infinite loop.
Integrity,Confidentiality,Availability,Access Control
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands; Bypass Protection Mechanism
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of a program's implicit security policy.
Integrity,Confidentiality,Availability,Access Control,Other
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands; Bypass Protection Mechanism; Other
When the consequence is arbitrary code execution, this can often be used to subvert any other security service.
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