CVE-2026-83045 in WebCenter Portal
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Runtime Tools). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Portal. While the vulnerability is in Oracle WebCenter Portal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebCenter Portal accessible data as well as unauthorized update, insert or delete access to some of Oracle WebCenter Portal accessible data. CVSS 3.1 Base Score 8.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Runtime Tools component of Oracle WebCenter Portal, a key element of the Oracle Fusion Middleware suite. This security flaw affects specific supported versions, namely 12.2.1.4.0 and 14.1.2.0.0, exposing organizations that rely on these platforms for enterprise portal services to significant risk. The nature of this vulnerability is particularly concerning because it allows an attacker with low privileges and network access via HTTP to compromise the integrity and confidentiality of the system. Unlike many vulnerabilities that require high-level administrative rights or complex user interaction, this flaw can be exploited by a relatively unprivileged actor who merely needs connectivity to the affected service over standard web protocols. This lowers the barrier for entry significantly, enabling threat actors with basic networking knowledge to initiate successful attacks against targeted infrastructure.
The operational impact of exploiting this vulnerability extends beyond the immediate boundaries of Oracle WebCenter Portal itself. While the technical flaw is located within the portal software, the consequences can trigger a scope change that impacts additional products connected to or dependent on the compromised system. This lateral movement potential means that an attacker who gains unauthorized access through this vector may use it as a foothold to pivot into other parts of the enterprise network. The primary outcomes of a successful exploit include unauthorized access to critical data stored within the portal and, in more severe scenarios, complete access to all Oracle WebCenter Portal accessible data. Furthermore, the vulnerability compromises system integrity by allowing attackers to perform unauthorized updates, inserts, or deletes on some of the accessible data. This capability not only leads to data leakage but also enables potential defacement, corruption of business-critical information, and disruption of services that depend on accurate portal content.
From a technical classification perspective, this vulnerability aligns with CWE-200, which covers exposure of sensitive information to an unauthorized actor, as well as CWE-778, insufficient logging or monitoring, if the lack of detection contributed to the ease of exploitation. The ability to modify data places it in alignment with integrity-focused weaknesses such as those related to improper input validation or authorization bypasses found in web application frameworks. In terms of offensive security tactics, this vulnerability facilitates initial access and potentially privilege escalation within the context of the MITRE ATT&CK framework. Specifically, it relates to techniques involving exploitation of server-side components for data exfiltration and modification. The high confidentiality impact combined with moderate integrity impact reflects a scenario where attackers can read sensitive corporate information while also having limited but dangerous capabilities to alter that information, thereby undermining trust in the system's outputs.
The CVSS 3.1 base score of 8.5 indicates a High severity level, driven primarily by the network-based attack vector and low complexity requirements. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N) confirms that no user interaction is required, which eliminates social engineering as a necessary step for exploitation. The scope change value of C signifies that the vulnerability affects resources beyond the vulnerable component itself, amplifying the overall risk to the organization's security posture. Organizations running these specific versions must treat this issue with urgency due to its ease of exploitation and broad impact potential.
Mitigation strategies should prioritize immediate patching by applying the latest Oracle Critical Patch Update (CPU) that addresses this specific Runtime Tools flaw. Until patches are applied, organizations should implement strict network segmentation to limit HTTP access to the WebCenter Portal services only from trusted IP ranges or internal networks where possible. Additionally, deploying a web application firewall can help filter out malicious requests targeting the vulnerable endpoints by identifying patterns associated with unauthorized data retrieval or modification attempts. It is also critical to enforce strong authentication mechanisms and least-privilege principles for all accounts interacting with the portal, ensuring that even if an attacker gains initial access through this vulnerability, their ability to move laterally or escalate privileges remains constrained. Regular auditing of logs related to WebCenter Portal activities can aid in early detection of exploitation attempts, allowing security teams to respond before significant data loss or corruption occurs.