CVE-2026-78630 in Access Gateway
Summary
by MITRE • 09/09/2026
The Okta Access Gateway does not neutralize shell metacharacters in SNMP configuration values before a privileged script uses them to construct OS commands. An authenticated local user with access to the management interface can supply crafted values, resulting in the execution of arbitrary OS commands with root privileges.
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability identified involves a critical command injection flaw within the Okta Access Gateway appliance, specifically affecting its Simple Network Management Protocol configuration subsystem. This security defect arises from an insufficient input validation mechanism where shell metacharacters are not neutralized or sanitized before being passed to underlying operating system commands. The root cause lies in the application's failure to properly escape special characters that hold significance for the command interpreter used by the privileged script responsible for applying SNMP settings. Consequently, when a user provides configuration values containing these unescaped characters, they can alter the intended structure of the executed OS command, allowing for the injection and execution of arbitrary commands alongside or instead of the legitimate administrative task.
From an operational perspective, this vulnerability poses a severe risk to system integrity because it allows any authenticated local user with access to the management interface to escalate privileges effectively to root level. The exploitation does not require network-based remote attacks but rather relies on physical or logical access to the management console, which is often considered a trusted zone in many organizational security models. An attacker who gains valid credentials for this interface can craft specific SNMP configuration payloads that bypass existing controls and execute system-level commands with full administrative rights. This capability enables the compromise of the entire host operating system, potentially leading to data exfiltration, lateral movement within the network, or complete denial of service through destructive command execution.
The technical classification of this flaw 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 is categorized under ATT&CK technique T1059, specifically subtechnique T1059.004 for Unix Shell Commands, indicating that the exploitation leverages native shell capabilities to achieve unauthorized code execution. This classification highlights the fundamental failure in input handling where user-supplied data is treated as executable code rather than safe string literals. The severity of this issue is amplified by the fact that it bypasses standard authentication mechanisms once initial access to the management interface is obtained, effectively rendering local account restrictions ineffective against determined adversaries with valid credentials.
Mitigation strategies for this vulnerability must focus on both immediate remediation and long-term architectural improvements. The primary defense involves applying vendor-provided patches or updates that address the input validation logic within the SNMP configuration module. Organizations should ensure their Okta Access Gateway appliances are updated to versions where shell metacharacters are properly escaped or rejected before being processed by privileged scripts. In addition to software updates, strict access control policies should be enforced on the management interface, limiting administrative privileges to only those personnel who absolutely require them. Implementing multi-factor authentication for local accounts and monitoring logs for unusual command execution patterns can further reduce the risk of exploitation. Regular security audits focusing on input validation practices across all configuration interfaces are essential to prevent similar injection vulnerabilities in other subsystems.