A vulnerability in the read-only maintenance shell of Cisco Intersight Virtual Appliance could allow an authenticated, local attacker with administrative privileges to elevate privileges to root on the virtual appliance. This vulnerability is due to improper file permissions on configuration files for system accounts within the maintenance shell of the virtual appliance. An attacker could exploit this vulnerability by accessing the maintenance shell as a read-only administrator and manipulating system files to grant root privileges. A successful exploit could allow the attacker to elevate their privileges to root on the virtual appliance and gain full control of the appliance, giving them the ability to access sensitive information, modify workloads and configurations on the host system, and cause a denial of service (DoS).
The vulnerability has been assigned a CVSS score of 6, classifying it as medium severity. This rating indicates that while the vulnerability is not the most critical, it still poses a significant risk to organizations that utilize the Cisco Intersight Virtual Appliance. The potential for an attacker to gain root access can lead to severe consequences, including unauthorized data access and service disruptions.
Currently, the vulnerability is awaiting analysis, and no public exploit has been confirmed. However, organizations should remain vigilant and monitor for any updates or patches from Cisco. Given the nature of this vulnerability, it is essential for organizations to assess their security posture and address this issue promptly.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. Ensuring that systems are up to date and properly configured can help prevent potential exploitation.
Vulnerability Details
The vulnerability in question is classified under CWE-732, indicating improper permission assignments. The lack of appropriate file permissions on critical configuration files enables attackers with administrative privileges to execute actions that can lead to privilege escalation. The vulnerability was published on January 21, 2026, and is currently classified with a CVSS score of 6, denoting medium severity.
Technical Analysis
The root cause of this vulnerability lies in improper file permissions on configuration files within the maintenance shell of the Cisco Intersight Virtual Appliance. The attack vector is local, requiring an attacker to have administrative privileges to exploit the vulnerability. The complexity of the attack is low, and no user interaction is required. Given these factors, it is relatively straightforward for an attacker to manipulate system files to gain root access.
The confidentiality and integrity impacts are assessed as high, indicating that successful exploitation could lead to unauthorized access to sensitive information and modifications to critical configurations. However, there is no impact on availability.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant, particularly for organizations relying on the Cisco Intersight Virtual Appliance for critical operations. The potential for an attacker to gain root access could lead to a broad blast radius, enabling them to manipulate workloads, access sensitive data, and potentially disrupt services.
Given the CVSS score of 6 and the lack of known public exploits, organizations should assess this vulnerability during their priority patch cycle. The urgency for remediation is medium, with a recommendation to schedule remediation as part of regular maintenance activities.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of the Cisco Intersight Virtual Appliance prior to the vendor patch are affected by this vulnerability. Organizations should ensure they are running the latest versions to mitigate risks.
Mitigation & Remediation
Cisco has not yet released a patch for this vulnerability. Organizations should monitor Cisco's advisory page for updates and apply patches as soon as they become available. In the meantime, organizations should implement configuration hardening practices to restrict access to the maintenance shell and ensure proper permissions are enforced on configuration files.
For further guidance on security practices, organizations can refer to resources on penetration testing and ensure that their security measures are robust.
Detection Guidance
Organizations should monitor logs for any unauthorized access attempts to the maintenance shell. Additionally, behavioral anomalies related to privilege escalation requests should be observed closely. Ensuring that any changes to system files are logged and reviewed can help detect potential exploitation.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to expose organizations to critical risks. The pattern of privilege escalation vulnerabilities highlights the importance of enforcing strict permission controls and regular audits of system configurations. Security teams should take this as a reminder to continually assess their security measures to defend against evolving threats.
For further reading on security strategies, organizations can explore topics such as privilege escalation, penetration testing methodology, and vulnerability management to strengthen their defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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