CVE-2026-83100 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. Easily exploitable vulnerability allows unauthenticated 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 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/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 component of Oracle Fusion Middleware, specifically affecting the Forms Services architecture in both Client-Server and Charmode configurations. This critical security flaw impacts supported software versions 12.2.1.19.0 and 14.1.2.0.0, representing a significant risk to organizations relying on these legacy or current enterprise application development frameworks for business-critical operations. The nature of this vulnerability is particularly severe due to its exploitability characteristics, which allow an unauthenticated attacker with network access via the HTTP protocol to compromise the integrity and availability of the Oracle Forms environment without requiring any user interaction or prior authentication credentials.
From a technical perspective, the flaw enables remote code execution or complete system takeover by leveraging weaknesses in how the server processes incoming HTTP requests within the specified components. The absence of required authentication for exploitation means that any entity capable of reaching the network interface hosting the vulnerable Oracle Forms service can initiate an attack sequence. This aligns with common vulnerability classifications such as CWE-287, which denotes Improper Authentication, and potentially CWE-94, if code injection is involved in achieving the takeover state. The ease of exploitation combined with the lack of access controls creates a high-severity risk profile where automated scanning tools or opportunistic attackers can successfully compromise the system with minimal effort.
The operational impact of this vulnerability is profound, as indicated by its CVSS 3.1 Base Score of 9.8 out of 10. This score reflects critical impacts across all three pillars of the security triad: confidentiality, integrity, and availability. A successful exploitation allows an attacker to take full control over the Oracle Forms application server. In practical terms, this means the attacker can read sensitive data stored or processed by the middleware, modify existing configurations or user sessions to alter business logic, and disrupt service availability by crashing processes or consuming system resources. For enterprises using Oracle Fusion Middleware for internal portals, customer-facing applications, or enterprise resource planning interfaces, such a compromise could lead to significant financial loss, regulatory non-compliance due to data exposure, and reputational damage from prolonged downtime.
In the context of cyber threat intelligence frameworks like MITRE ATT&CK, this vulnerability facilitates initial access and privilege escalation techniques often associated with remote service exploits. Attackers may leverage this entry point to establish a foothold within the network perimeter, potentially moving laterally to other systems or escalating privileges to gain administrative control over the underlying operating system hosting the middleware. The vector AV:N indicates that the attack is exploitable across networks, including the internet, while AC:L and UI:N confirm low complexity and no user interaction requirements, respectively. These factors collectively elevate the urgency for remediation, as the barrier to entry for malicious actors is exceptionally low.
Mitigation strategies must prioritize immediate patching of Oracle Forms Services in affected versions 12.2.1.19.0 and 14.1.2.0.0 using official security patches provided by Oracle. Until patches are applied, organizations should implement strict network segmentation to restrict HTTP access to the vulnerable service only from trusted internal subnets or specific IP ranges if external exposure is not strictly necessary. Additionally, deploying Web Application Firewalls with rulesets designed to detect and block anomalous HTTP requests targeting known vulnerability patterns can provide a layer of defense in depth. Regular monitoring for signs of unauthorized access attempts and ensuring that all middleware components are kept up-to-date with the latest security updates from Oracle are essential practices to maintain the integrity and availability of enterprise applications built on this platform.