CVE-2026-76472 in Campus Gateway Software
Summary
by MITRE • 10/07/2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-76472 are related to issues with improper neutralization of special elements that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-74.
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified as CVE-76472 stems from a fundamental flaw in how Cisco networking software handles input data, specifically involving the improper neutralization of special elements within processed strings. This class of issue is categorized under Common Weakness Enumeration identifier CWE-74, which describes weaknesses related to injection vulnerabilities where untrusted input is interpreted as code or commands by an application. In the context of network infrastructure devices, such flaws typically arise when user-supplied data, configuration parameters, or protocol payloads are incorporated into system calls, command interpreters, or scripting engines without adequate sanitization or validation mechanisms. The failure to properly escape or filter special characters allows malicious actors to manipulate the intended logic of the software by injecting unintended commands or altering execution paths.
From a technical perspective, this weakness represents a classic injection vector where the boundary between data and code is blurred due to insufficient input filtering. When an application processes external inputs without rigorous validation, it may inadvertently execute those inputs as part of its operational workflow. For Cisco networking equipment, which often relies on complex command-line interfaces and configuration parsers, such vulnerabilities can be particularly severe if they occur in components that handle administrative commands or network protocol data. The lack of proper neutralization means that characters with special meaning to the underlying interpreter are passed through unchanged, potentially allowing an attacker to inject arbitrary system-level commands or alter application behavior beyond its intended scope.
The operational impact of this vulnerability is significant given the critical role Cisco devices play in enterprise and service provider networks. If exploited successfully, an attacker could achieve unauthorized command execution on the affected device, leading to a complete compromise of network integrity. This could result in data exfiltration, denial of service conditions by disrupting normal traffic flows, or using the compromised device as a pivot point for further attacks against other systems within the internal network infrastructure. The severity is amplified because these devices often possess high privileges and broad access to sensitive network segments, making them attractive targets for persistent threats seeking lateral movement or critical infrastructure disruption.
In terms of threat modeling, this vulnerability aligns with techniques observed in advanced persistent threat campaigns where initial access leads to privilege escalation and command execution. It maps closely to the ATT&CK technique T1059 Command and Scripting Interpreter, which covers scenarios where adversaries use built-in operating system utilities or scripting languages to execute malicious commands. Additionally, it relates to MITRE CWE-74 Improper Neutralization of Special Elements in Data Used by a Command, highlighting the need for robust input validation strategies at the application layer. The exploitation potential depends on whether the vulnerable component is accessible remotely and if authentication controls are bypassed or weak, but the underlying flaw remains a critical security risk requiring immediate attention.
To mitigate this vulnerability, Cisco has released software hardening updates that address these specific internal findings by implementing stricter input validation and output encoding procedures. Administrators should prioritize applying these patches to all affected devices within their network topology as soon as possible. Beyond patching, defense-in-depth strategies such as restricting management interface access through firewall rules, enforcing strong authentication policies, and monitoring for anomalous command execution patterns can help reduce the attack surface. Regular security audits and adherence to secure coding standards that emphasize input sanitization are essential preventive measures against similar injection-based vulnerabilities in network infrastructure software.