CVE-2026-83101 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 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 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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 of the Oracle Fusion Middleware suite, 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 represents a critical risk to organizations relying on these legacy web application frameworks for enterprise business processes. The vulnerability is characterized by its potential to allow an unauthenticated attacker with network access via HTTP to compromise the integrity of the Oracle Forms environment. Although the exploit complexity is rated as difficult, requiring specific conditions or precise sequencing to trigger successfully, the severity of the outcome renders it a high-priority concern for security operations teams managing these systems.
From a technical perspective, this vulnerability falls under the category of improper input validation and authentication bypass mechanisms within the web server interface handling HTTP requests. The flaw likely stems from insufficient sanitization of user-supplied data or inadequate enforcement of access controls before processing specific form submissions or state transitions. This allows an attacker to manipulate internal application logic without valid credentials, effectively circumventing standard security boundaries. The difficulty in exploitation suggests that while automated scanning tools may not easily detect this issue, a skilled adversary with knowledge of the Oracle Forms architecture could craft specialized payloads to trigger the flaw.
The operational impact of a successful exploit is severe, resulting in complete takeover of the Oracle Forms application instance. This level of compromise implies full control over the underlying server processes hosting the middleware, enabling the attacker to execute arbitrary code, modify data integrity, and disrupt availability services. The CVSS 3.1 base score of 8.1 reflects high impacts across confidentiality, integrity, and availability vectors. Specifically, an unauthenticated network attack with high complexity still yields significant damage potential due to the privileged nature of the compromised service. Attackers could potentially exfiltrate sensitive business data stored or processed by Forms applications, alter critical transaction records, or launch further attacks against internal networks from this pivot point.
In terms of industry standard classifications, this vulnerability aligns closely with CWE-287 Improper Authentication and CWE-94 Improper Control of Generation of Code Command Injection if code execution is involved. It also maps to the MITRE ATT&CK framework techniques related to Initial Access via Web Applications and potentially Lateral Movement or Privilege Escalation depending on how the takeover is leveraged post-exploitation. The network-based nature of the attack vector classifies it under Remote Code Execution scenarios where authentication is not required, highlighting a critical gap in perimeter defense strategies for legacy middleware components.
Mitigation efforts must prioritize immediate patching to the latest available version provided by Oracle that addresses this specific flaw within the Forms Services component. Organizations should also implement strict network segmentation to restrict HTTP access to these services only from trusted internal subnets or through secure, authenticated proxies rather than exposing them directly over public networks. Additionally, deploying Web Application Firewalls with rulesets tuned for Oracle Forms vulnerabilities can provide an additional layer of defense by detecting and blocking malicious payloads associated with this exploit pattern before they reach the application server. Regular vulnerability assessments focusing on legacy middleware are essential to identify such high-severity gaps in older supported versions that may lack automatic patching capabilities.