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CVE-2026-83104 – Unauthenticated Data Manipulation (RCE-class) – Oracle Forms 12.2.1.19.0 / 14.1.2.0

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Summary

CVE-2026-83104 is a critical missing-authentication vulnerability affecting the Forms Services, C/S, and Charmode components of Oracle Forms (part of Oracle Fusion Middleware). The flaw allows an unauthenticated, remote attacker with network access via TCP to compromise Oracle Forms without any user interaction. Oracle rates the vulnerability CRITICAL with a CVSS 3.1 base score of 9.1.

Technical details

  • Root cause: missing authentication for a critical function (CWE-306) combined with improper authentication (CWE-287) in the Forms Services, C/S, and Charmode components of Oracle Forms.
  • Trigger conditions: no authentication or user interaction is required; the vulnerability is described by Oracle as "easily exploitable."
  • Attack vector: network-based, reachable by an attacker with TCP connectivity to the exposed Oracle Forms service (low attack complexity, no privileges required).
  • Impact: unauthorized creation, deletion, or modification of critical data, and unauthorized read access to all data accessible to Oracle Forms. There is no impact on availability.

Affected software

  • Oracle Forms (Oracle Fusion Middleware) version 12.2.1.19.0
  • Oracle Forms (Oracle Fusion Middleware) version 14.1.2.0.0

Severity

  • CVSS v3.1 Base Score: 9.1 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate: Apply the Oracle Critical Security Patch Update for September 2026, which addresses this vulnerability for Oracle Forms 12.2.1.19.0 and 14.1.2.0.0.
  • If patching cannot be applied immediately: restrict network access to the Oracle Forms Services/Charmode listener (e.g., via firewall rules or VPN) so that it is not reachable from untrusted networks, since the flaw requires only network connectivity and no credentials to exploit.
  • Monitor internet-facing Oracle Forms deployments and prioritize remediation given the unauthenticated, network-exploitable nature of this issue.

References

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