CVE-2026-82764 in FXA5000
Summary
by MITRE • 09/14/2026
Cross-site request forgery vulnerability exists in multiple Contec products. If a user views a specially crafted page while logged in to the affected product, unintended operations may be performed.
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Analysis
by VulDB Data Team • 09/14/2026
The identified security flaw represents a classic Cross-Site Request Forgery (CSRF) vulnerability affecting various products manufactured by Contec. This type of attack exploits the trust that a web application places in an authenticated user's browser session to perform unauthorized actions on behalf of that user without their explicit consent or knowledge. The core technical deficiency lies in the absence of robust anti-CSRF mechanisms, such as synchronizer tokens or custom request headers, which are essential for verifying that incoming requests originate from legitimate users interacting with the application rather than malicious third-party sites. When a victim is authenticated and visits a specially crafted webpage controlled by an attacker, their browser automatically includes valid session cookies in any HTTP requests sent to the vulnerable Contec product's endpoints. Consequently, if those endpoints lack proper validation of the request origin or do not require additional proof of user intent, they will process the forged requests as legitimate administrative or configuration changes initiated by the authenticated user.
From an operational perspective, the impact of this vulnerability is contingent upon the privileges held by the targeted user account and the specific actions exposed through the vulnerable endpoints. If a standard user can trigger unintended operations, it may lead to data corruption, unauthorized access modifications, or service disruption within the Contec environment. In scenarios where administrative accounts are susceptible, an attacker could potentially alter system configurations, create new privileged users, exfiltrate sensitive data, or completely compromise the integrity of the affected systems. The attack vector is particularly insidious because it does not require complex exploitation techniques; instead, it relies on social engineering tactics such as embedding malicious links in emails, forums, or images to trick victims into loading the crafted page while their session remains active with the target application. This makes detection difficult for traditional security monitoring tools that primarily focus on external intrusion attempts rather than internal request validation failures.
This vulnerability aligns directly with CWE-352, which defines Cross-Site Request Forgery as a weakness where an attacker causes a user to submit a malicious request to a trusted site. Furthermore, in the context of the MITRE ATT&CK framework, this behavior corresponds to techniques under Tactic TA0001 Initial Access and specifically relates to methods that abuse trust relationships within web applications. The lack of proper state change validation allows attackers to leverage existing authentication states to execute actions that should require explicit user confirmation or additional security checks. To mitigate this risk, developers must implement robust anti-CSRF protections across all state-changing endpoints. This includes generating unique, unpredictable tokens per session and validating them on every POST, PUT, DELETE, or PATCH request. Additionally, enforcing the SameSite attribute for cookies to Strict or Lax modes can significantly reduce the likelihood of successful CSRF attacks by preventing browsers from sending credentials in cross-site contexts. Regular security audits and penetration testing focused on state management are also recommended to ensure that all functional changes within the Contec products are adequately protected against unauthorized execution.