CVE-2026-12352 in PortServer TS 1
Summary
by MITRE • 07/07/2026
This vulnerability allows an unauthenticated actor to bypass authentication and gain access to restricted resources on the device.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/07/2026
This authentication bypass vulnerability represents a critical weakness in access control mechanisms that can be exploited by unauthenticated attackers to gain unauthorized access to protected system resources. The flaw fundamentally undermines the security model of the affected device by allowing malicious actors to circumvent established authentication protocols without requiring valid credentials or prior authorization. Such vulnerabilities typically arise from improper implementation of access control checks, where the system fails to adequately verify user identity before granting access to sensitive functions or data repositories.
The technical nature of this vulnerability aligns with common patterns found in software security flaws that permit privilege escalation or unauthorized resource access through weakened authentication controls. Attackers can leverage this weakness to perform actions that should normally be restricted to authorized users, potentially leading to complete system compromise or data exfiltration. This type of vulnerability often manifests when authentication routines are bypassed through predictable code paths, missing validation checks, or improper state management within the application logic. The absence of proper access control verification creates an attack surface where malicious actors can directly interact with protected components without undergoing the normal authentication process.
From an operational perspective, this vulnerability can result in significant security implications including unauthorized data access, system manipulation, and potential lateral movement within network environments. The impact extends beyond immediate unauthorized access to include potential cascading effects such as privilege escalation, persistent backdoor establishment, or exploitation of related vulnerabilities that may be accessible once initial unauthorized access is achieved. Organizations face substantial risks including compliance violations, data breaches, and reputational damage when such authentication bypasses exist in their systems. The vulnerability's accessibility to unauthenticated actors makes it particularly dangerous as it requires minimal skill or resources to exploit, potentially allowing even novice attackers to gain system-level privileges.
Mitigation strategies should focus on implementing robust authentication controls including multi-factor authentication, proper access control implementation, and regular security testing of authentication mechanisms. Organizations must ensure that all access control points are properly validated and that authentication checks occur before any privileged operations are executed. Security measures should include input validation, proper session management, and comprehensive testing of authentication flows to identify potential bypass opportunities. The vulnerability demonstrates the importance of following secure coding practices as outlined in owasp top ten and other industry standards while implementing defense-in-depth strategies that can detect and prevent unauthorized access attempts through multiple control layers.
This type of vulnerability is commonly categorized under cwe 285 which addresses improper authorization issues, and may map to attack techniques in the attack tree framework such as credential compromise or privilege escalation. The security implications align with nist cybersecurity framework principles emphasizing the importance of protecting system resources through proper access controls and continuous monitoring for unauthorized access attempts. Organizations should implement regular security assessments including penetration testing and vulnerability scanning to identify potential authentication bypass opportunities before they can be exploited by malicious actors.