CVE-2026-83098 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 product, specifically affecting the Forms Services component in Client-Server and Charmode configurations of Oracle Fusion Middleware versions 12.2.1.19.0 and 14.1.2.0. This security flaw is classified as a critical severity issue with a CVSS v3.1 base score of 9.8, indicating that it allows for complete system compromise under specific conditions. The vulnerability vector indicates that the attack can be executed remotely over a network via HTTP without requiring any prior authentication or user interaction. This combination of high accessibility and low complexity makes the flaw particularly dangerous in environments where Oracle Forms services are exposed to untrusted networks or the public internet.
From a technical perspective, the core issue stems from insufficient validation or sanitization mechanisms within the Forms Services component when processing incoming HTTP requests. An attacker can craft maliciously formatted data packets that exploit this lack of input verification. Because the vulnerability does not require authentication, any entity with network connectivity to the affected service port can attempt exploitation. The nature of the flaw likely involves a buffer overflow, deserialization issue, or logic error in how the server handles specific form parameters or session states, leading to arbitrary code execution or control flow hijacking within the context of the Oracle Forms process.
The operational impact of successful exploitation is severe and comprehensive. As indicated by the high scores for Confidentiality, Integrity, and Availability in the CVSS vector, an attacker who successfully exploits this vulnerability gains full administrative control over the Oracle Forms application server. This means the attacker can read sensitive data stored within the forms environment, modify existing configurations or user data to alter system behavior, and disrupt service availability by crashing the process or consuming resources until denial of service occurs. In a production environment, this effectively results in the total takeover of the affected middleware instance, potentially serving as a foothold for further lateral movement into the broader enterprise network if additional security controls are not in place.
This vulnerability aligns with several well-known industry standards and threat models. It is consistent with CWE-20 Improper Input Validation or CWE-78 OS Command Injection depending on the specific mechanism of code execution, though remote unauthenticated access often points toward deserialization flaws (CWE-502) or buffer overflows (CWE-120). In terms of offensive security frameworks such as MITRE ATT&CK, this vulnerability facilitates initial access through network service exploitation and may enable privilege escalation if the Oracle Forms process runs with elevated system privileges. The attack path corresponds to techniques involving remote services that lack proper authentication checks or input sanitization protocols.
Mitigation strategies must be implemented immediately to reduce the risk of compromise. The primary remediation is to apply the latest security patches provided by Oracle for versions 12.2.1.19.0 and 14.1.2.0. Organizations should verify their patch levels through official Oracle support channels and ensure that all relevant middleware components are updated to a version where this flaw has been addressed. In addition to patching, network-level controls such as Web Application Firewalls (WAF) can be configured to detect and block malicious HTTP payloads associated with the exploitation of this vulnerability. It is also critical to restrict access to Oracle Forms services so that they are not directly exposed to untrusted networks; instead, access should be mediated through secure proxies or internal network segments with strict firewall rules limiting connectivity to authorized IP ranges only. Regular security audits and penetration testing should be conducted to identify similar misconfigurations in other middleware components.