CVE-2026-18450 in X12SPI
Summary
by MITRE • 10/27/2026
The BMC does not correctly enforce integrity and encryption requirements for IPMI commands. An attacker may be able to craft packets that execute arbitrary commands on an active session.
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Analysis
by VulDB Data Team • 10/27/2026
This vulnerability represents a critical failure in the Baseboard Management Controller's implementation of the Intelligent Platform Management Interface protocol, specifically regarding the enforcement of security controls defined by industry standards such as CWE-347 Improper Verification of Cryptographic Signature and CWE-285 Improper Authorization. The BMC serves as the central hub for out-of-band management, providing administrators with remote access to server hardware regardless of the host operating system state. By failing to correctly enforce integrity checks and encryption requirements during IPMI command processing, the system exposes itself to severe manipulation attacks that bypass intended security boundaries.
The technical flaw lies in the packet validation logic within the BMC firmware or software stack responsible for parsing incoming IPMI messages. Instead of strictly validating the cryptographic signatures or ensuring that encrypted payloads are properly decrypted before execution, the controller accepts crafted packets with manipulated fields. This allows an attacker to inject commands into an active session without triggering integrity verification failures. The lack of proper authentication checks on specific command types means that even if a session is established, the subsequent actions taken within that session may not be subject to rigorous validation against the expected security policy.
From an operational perspective, this weakness enables remote code execution at the hardware level with potentially minimal privileges depending on the context of the active session. An attacker who can intercept or inject network traffic into the management subnet could execute arbitrary commands on the BMC itself. This capability allows for significant disruption including powering off servers to cause denial of service, modifying firmware settings to persist malicious configurations, extracting sensitive data such as encryption keys stored in non-volatile memory, or pivoting further into the internal network by exploiting trust relationships between the management interface and other systems.
The impact extends beyond immediate system compromise to include long-term integrity issues. Since IPMI commands can alter hardware-level settings, an attacker could disable security features like Secure Boot configurations or modify boot order parameters to load malicious firmware updates during restart cycles. This aligns with ATT&CK techniques related to persistence through BIOS/UEFI firmware modifications and lateral movement via management interfaces. The ability to execute arbitrary commands effectively grants the adversary full control over the physical infrastructure, undermining all higher-level security controls that assume hardware integrity is maintained.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Organizations should immediately apply vendor-provided patches or firmware updates that address this specific validation flaw in the BMC software stack. Network segmentation is crucial; management interfaces like IPMI should be isolated on dedicated VLANs with strict access control lists limiting source IPs to authorized administrative workstations only. Additionally, enforcing strong authentication mechanisms such as Kerberos or certificate-based mutual TLS for all remote management sessions can help ensure that even if packet integrity checks are bypassed in some contexts, the initial session establishment remains secure. Regular auditing of BMC configurations and disabling unused IPMI services further reduces the attack surface available to potential adversaries seeking to exploit this vulnerability.