CVE-2026-23856 describes a high-severity vulnerability affecting the Dell iDRAC Service Module (iSM). This issue is present in versions prior to 6.0.3.1 for Windows and 5.4.1.1 for Linux. The vulnerability allows a low privileged attacker with local access to potentially exploit it, leading to privilege escalation. With a CVSS score of 7.8, this vulnerability poses a significant risk to organizations relying on affected iDRAC Service Modules.
The exploitation status of this vulnerability is currently awaiting analysis. Organizations using these iDRAC Service Modules should take this vulnerability seriously due to its implications for unauthorized access and potential system compromise. Urgency for remediation is high due to the critical nature of the access control flaw.
Risk to organizations includes unauthorized access to sensitive systems, which could lead to further exploitation. Attackers may leverage this vulnerability to gain elevated privileges, compromising the integrity and confidentiality of sensitive data.
Organizations should prioritize patching immediately. Ensuring all systems are updated to the latest versions is critical in mitigating this vulnerability.
Vulnerability Details
The official description for CVE-2026-23856 states that the Dell iDRAC Service Module (iSM) for Windows and Linux has an Improper Access Control vulnerability. Specifically, this affects iSM for Windows, versions prior to 6.0.3.1, and Linux, versions prior to 5.4.1.1. The vulnerability is classified under CWE-284.
The CVSS score of 7.8 indicates a high severity level, with the attack vector being local, and a low attack complexity. The required privileges are low, and no user interaction is necessary to exploit this vulnerability. The impact on confidentiality, integrity, and availability is high.
Technical Analysis
The root cause of CVE-2026-23856 lies in improper access controls within the Dell iDRAC Service Module. This flaw enables a low privileged attacker to execute unauthorized actions on the system. The attack vector is local, requiring the attacker to have physical or local network access to the system.
The attack complexity is assessed as low, making it easier for attackers to exploit this vulnerability. Privileges required to exploit this vulnerability are low, meaning even users with minimal access could potentially exploit it. User interaction is not required, which further increases the risk.
Exploitation of this vulnerability could lead to significant impacts on confidentiality, integrity, and availability. Attackers gaining unauthorized access could modify data, disrupt services, and compromise sensitive information.
Risk & Impact Analysis
Real-world deployment risk is substantial for organizations using affected versions of the Dell iDRAC Service Module. The potential for unauthorized privilege escalation poses a serious threat to system integrity and data confidentiality. Organizations utilizing these systems should assess their exposure to this vulnerability and prioritize remediation efforts.
The urgency assessment based on the CVSS score indicates that organizations must address this vulnerability in their priority patch cycle. Given the high impact and the potential blast radius of exploitation, immediate action is required.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include Dell iDRAC Service Module (iSM) for Windows prior to 6.0.3.1 and for Linux prior to 5.4.1.1. Organizations should ensure they update to these versions or later to mitigate risk.
Mitigation & Remediation
Organizations should prioritize patching this vulnerability immediately. Update to the latest versions of the Dell iDRAC Service Module as outlined in vendor advisories. If immediate patching is not possible, consider implementing access controls and monitoring solutions to mitigate potential exploitation. Regularly review and harden configuration settings to reduce exposure.
Penetration testing can also help validate that the vulnerabilities have been effectively addressed.
Detection Guidance
To detect potential exploitation of CVE-2026-23856, organizations should monitor logs for unauthorized access attempts, especially from local accounts. Behavioral anomalies in system performance or unauthorized changes to configurations should also be investigated. Implementing network signatures that alert on suspicious activity can enhance detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-23856 lies in its potential to highlight weaknesses in access controls across similar systems. This vulnerability serves as a reminder for security teams to continuously assess their defenses and implement robust access control measures. Regular audits and the adoption of secure coding practices are essential to prevent similar vulnerabilities from being introduced.
A vulnerability management program can assist in identifying potential weaknesses before they become exploitable.
Penetration testing methodology should also be reviewed to ensure that testing is thorough and includes checks for privilege escalation vulnerabilities.
Security testing best practices should be followed to ensure ongoing protection against emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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