CVE-2026-83106 in Forms
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Forms product of Oracle Fusion Middleware (component: Forms Services, C/S, Charmode). Supported versions that are affected are 12.2.1.19.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Forms. Successful attacks of this vulnerability can result in takeover of Oracle Forms. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Oracle Forms product of Oracle Fusion Middleware, specifically affecting the Forms Services component in client/server and Charmode configurations across versions 12.2.1.19.0 and 14.1.2.0. This security flaw presents a significant risk to organizations relying on these legacy web application frameworks for enterprise business processes. The vulnerability is characterized by its difficulty of exploitation, which typically implies that the attack requires specific conditions or precise timing beyond simple automated scripts, yet it remains accessible to attackers with low privileges who have network access via HTTP. Despite this complexity, the potential impact is severe, allowing a successful attacker to achieve complete takeover of the Oracle Forms application environment. This level of compromise indicates that the flaw likely involves improper handling of user input or session management within the server-side processing logic, enabling an adversary to bypass authentication mechanisms or execute arbitrary commands under the context of the running service.
From a technical perspective, this vulnerability aligns with common weaknesses found in older web frameworks where legacy code paths may not adequately sanitize inputs or enforce strict access controls before executing critical functions. The ability for a low-privileged attacker to compromise the system suggests that privilege escalation mechanisms within the application are either flawed or insufficiently enforced at the network layer. By leveraging HTTP-based interactions, an attacker can potentially inject malicious payloads into form submissions or session tokens, exploiting logic errors in how Oracle Forms processes these requests. This could lead to unauthorized access to sensitive data stored by the forms, modification of critical business records, or disruption of service availability through denial-of-service conditions triggered by malformed inputs that crash the underlying Java Virtual Machine instances hosting the application.
The operational impact of this vulnerability is substantial given its CVSS 3.1 base score of 7.5, which reflects high impacts on confidentiality, integrity, and availability. A successful exploit allows an attacker to take over Oracle Forms, effectively granting them control over the web interface used by end-users for business transactions. This can result in the exfiltration of confidential corporate data, tampering with financial or operational records leading to significant integrity loss, and rendering the application unavailable to legitimate users, thereby causing downtime and potential revenue loss. The vector (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) highlights that while network access is required and exploitation complexity is high, no user interaction is needed beyond initiating a connection, and low privileges are sufficient for success. This makes the vulnerability particularly dangerous in environments where internal networks may not be strictly segmented or where default accounts with minimal permissions exist within the middleware infrastructure.
To mitigate this risk, organizations must prioritize patching Oracle Fusion Middleware to the latest available version that addresses these specific flaws in Forms Services. Since the affected versions are 12.2.1.19.0 and 14.1.2.0.0, applying the most recent Critical Patch Update (CPU) released by Oracle is essential. In addition to patching, implementing network-level controls such as Web Application Firewalls can help detect and block malicious HTTP requests that attempt to exploit this vulnerability before they reach the application server. Restricting access to Oracle Forms services to trusted IP ranges via firewall rules reduces the attack surface for low-privileged attackers who might otherwise gain initial foothold in less secure network segments. Furthermore, enforcing strict authentication policies and monitoring logs for anomalous activity patterns associated with privilege escalation attempts can provide early detection of exploitation efforts. Regular security assessments and penetration testing focused on legacy middleware components are also recommended to identify similar latent vulnerabilities before they can be leveraged by adversaries. This approach aligns with industry standards such as CWE-20 Improper Input Validation and ATT&CK techniques related to initial access and privilege escalation, ensuring a comprehensive defense strategy against both known and emerging threats targeting Oracle Fusion Middleware environments.