CVE-2026-17074 in IBM
Summary
by MITRE • 08/14/2026
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to improper privilege management.
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Analysis
by VulDB Data Team • 08/14/2026
This vulnerability affects IBM i operating systems version 7.6, 7.5, 7.4, and 7.3, presenting a critical security risk that allows remote authenticated attackers to bypass security restrictions through improper privilege management. The flaw resides in how the system handles user permissions and access controls, creating potential pathways for unauthorized privilege escalation. Attackers who have already established legitimate authentication credentials can exploit this weakness to gain elevated privileges beyond their intended access levels. This vulnerability directly relates to CWE-276, which describes improper privilege management, and represents a significant deviation from secure coding practices that should ensure proper access control mechanisms are enforced at all system levels.
The technical implementation of this flaw likely involves insufficient validation of user permissions during critical system operations or administrative functions. When authenticated users perform specific actions within the IBM i environment, the system fails to properly verify whether these users possess the necessary authorization levels to execute certain commands or access restricted resources. This misconfiguration allows attackers to manipulate their session context or exploit API calls that should require higher privilege levels, effectively circumventing the intended security boundaries. The vulnerability's remote nature means that exploitation does not require physical access to the system, making it particularly dangerous for organizations with internet-facing IBM i implementations.
Operational impact of this vulnerability extends beyond simple privilege escalation, potentially enabling attackers to access sensitive data, modify critical system configurations, or even compromise the entire system integrity. Organizations relying on IBM i for business-critical applications face significant risk if this vulnerability is exploited, as it could lead to data breaches, system downtime, or unauthorized modifications to financial and operational processes. The attack surface includes various system components such as database access, file system operations, network configuration changes, and administrative functions that require elevated privileges. This vulnerability particularly impacts environments where IBM i systems are integrated with enterprise applications, ERP systems, or critical business processes that depend on proper access controls.
Mitigation strategies should prioritize immediate patch application from IBM, as this addresses the root cause of the privilege management flaw. Organizations must also implement comprehensive monitoring of system access logs to detect anomalous privilege usage patterns that might indicate exploitation attempts. Network segmentation and firewall rules should be reviewed to limit unnecessary remote access to IBM i systems, while privileged account management procedures should be strengthened through regular audits and enforcement of least privilege principles. Security teams should conduct thorough vulnerability assessments to identify potential exploitation vectors and establish incident response procedures specifically addressing privilege escalation scenarios. Additionally, implementing multi-factor authentication for administrative access and maintaining detailed audit trails will help detect and prevent unauthorized privilege elevation attempts, aligning with security best practices outlined in the NIST Cybersecurity Framework and supporting ATT&CK techniques related to privilege escalation and defense evasion.