CVE-2026-82369 in SANnav
Summary
by MITRE • 09/24/2026
Insufficient input sanitization of shell metacharacters in the Brocade SANnav CLI scripting component permits authenticated users to break out of restricted execution contexts on managed switches. An attacker with command execution permissions can leverage this flaw to run unauthorized shell commands across target fabric switches, bypassing command allow-lists and obtaining full administrative switch access. This vulnerability affects all Brocade SANnav versions before 3.0.1a.
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Analysis
by VulDB Data Team • 09/24/2026
The identified vulnerability represents a critical failure in input validation within the Command Line Interface scripting component of Brocade SANnav software. Specifically, the system fails to adequately sanitize shell metacharacters when processing user-supplied inputs for CLI scripts. This deficiency allows an authenticated attacker who possesses command execution permissions to inject arbitrary commands that are interpreted by the underlying operating system rather than being restricted to the intended application context. The core technical flaw lies in the insufficient filtering of special characters such as semicolons, pipes, ampersands, and backticks, which serve as delimiters or operators for shell interpretation. By exploiting this lack of sanitization, an attacker can construct payloads that break out of the sandboxed or restricted execution environment imposed by the application's command allow-lists. This mechanism effectively neutralizes the security controls designed to limit user privileges, enabling the direct invocation of system-level commands on the managed switches.
The operational impact of this vulnerability is severe, as it leads to a complete compromise of administrative access over the storage area network infrastructure. An attacker leveraging this flaw can execute unauthorized shell commands across target fabric switches with elevated privileges. This capability allows for the exfiltration of sensitive configuration data, modification of critical system settings, and potentially the deployment of malicious code or further lateral movement within the network environment. Since Brocade SANnav serves as a central management platform for Fibre Channel fabrics, compromising its CLI scripting interface grants control over multiple switches simultaneously. The ability to bypass command allow-lists means that even users with limited intended privileges can escalate their access to full administrative rights, undermining the principle of least privilege and exposing the entire fabric to potential disruption or data loss.
This vulnerability aligns closely with Common Weakness Enumeration identifier CWE-78, which describes Improper Neutralization of Special Elements used in an OS Command, commonly known as OS Command Injection. The attack vector involves authenticated users exploiting a logic error in input handling rather than breaking cryptographic protections or bypassing authentication mechanisms directly. In the context of the MITRE ATT&CK framework, this exploitation technique corresponds to T1059, specifically sub-techniques related to command and script interpreters such as Unix Shell (T1059.004). The attacker utilizes valid credentials but abuses the application's trust in input data to execute commands outside of its intended scope, effectively achieving privilege escalation through command injection rather than traditional vulnerability exploitation like buffer overflows or authentication bypasses.
To mitigate this risk, organizations running affected versions of Brocade SANnav must apply the vendor-recommended patches immediately. All versions prior to 3.0.1a are susceptible to this issue, and upgrading to version 3.0.1a or later is required to resolve the input sanitization flaws in the CLI scripting component. In addition to patching, administrators should enforce strict access controls on SANnav accounts, ensuring that only essential personnel have command execution permissions. Implementing network segmentation to isolate management traffic from general data networks can also reduce the attack surface. Furthermore, continuous monitoring of administrative actions and script executions within the SANnav environment is recommended to detect any anomalous behavior indicative of exploitation attempts before significant damage occurs.