CVE-2026-4757 in Axis OS
Summary
by MITRE • 08/11/2026
A VAPIX API parameter had improper input validation which could allow code execution and potentially lead to a privilege escalation. This flaw can only be exploited after authenticating with an administrator-privileged service account.
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Analysis
by VulDB Data Team • 08/11/2026
The vulnerability under examination represents a critical security flaw within the VAPIX API framework that demonstrates inadequate input validation mechanisms. This weakness manifests as a potential code execution vector that could escalate privileges when exploited by authenticated administrators. The vulnerability exists in the parameter handling logic of the VAPIX API interface, where insufficient sanitization of user-provided inputs allows malicious data to traverse into system commands or code execution contexts.
The technical nature of this flaw aligns with common software security vulnerabilities categorized under CWE-20, which addresses "Improper Input Validation" in software systems. This classification indicates that the API fails to properly validate or sanitize input parameters before processing them within the application's execution context. The vulnerability specifically affects parameter handling within the VAPIX API, suggesting that the system does not adequately filter or escape user-supplied data before incorporating it into system operations or command sequences.
From an operational perspective, this vulnerability presents a significant risk to organizations relying on VAPIX-enabled devices, particularly those implementing network security controls based on authentication and privilege separation. The requirement for administrator-privileged service account credentials acts as a necessary but not sufficient condition for exploitation, indicating that while the attack vector is limited by authentication requirements, successful exploitation could result in elevated privileges within the system. This scenario creates a dangerous situation where compromised administrative credentials could lead to complete system compromise through code execution capabilities.
The potential impact of this vulnerability extends beyond simple code execution to encompass privilege escalation scenarios that could allow attackers to gain unauthorized access to additional system resources or escalate their privileges to root or equivalent administrative levels. The attack surface is constrained by the authentication requirement but remains critical given that administrative accounts are typically high-value targets in security assessments. This vulnerability would be classified under ATT&CK technique T1059, which covers "Command and Scripting Interpreter" and potentially T1484 for privilege escalation activities.
Security mitigation strategies must focus on implementing robust input validation measures at the API parameter level, including comprehensive sanitization of all user-supplied data before processing. Organizations should implement strict parameter type checking, length validation, and character set restrictions to prevent malicious inputs from reaching execution contexts. Additionally, principle of least privilege enforcement should be maintained through proper access control mechanisms that limit administrative functionality exposure to only necessary personnel.
The vulnerability demonstrates the critical importance of secure coding practices in API development, particularly around input handling and parameter validation. Organizations utilizing VAPIX-enabled systems should prioritize immediate patching of affected components while implementing network segmentation controls to limit potential exploitation pathways. Regular security assessments including penetration testing and code reviews should be conducted to identify similar validation weaknesses in other system interfaces, ensuring comprehensive protection against similar vulnerabilities across the entire attack surface.
The presence of this vulnerability highlights common architectural issues in enterprise API implementations where insufficient input validation creates dangerous execution paths for authenticated attackers. The requirement for administrative credentials provides some defense-in-depth but does not eliminate the risk entirely, as administrative accounts often possess extensive system access capabilities that could be leveraged to cause significant damage once exploited. This vulnerability serves as a reminder of the critical need for implementing automated security controls and continuous monitoring systems to detect and prevent exploitation attempts in real-time.