CVE-2026-83091 in Field Service
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Field Service product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Field Service. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Field Service accessible data as well as unauthorized update, insert or delete access to some of Oracle Field Service accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Field Service. CVSS 3.1 Base Score 7.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Internal Operations component of Oracle Field Service, a critical module in the Oracle E-Business Suite ecosystem designed to manage field service operations such as dispatching, scheduling, and resource allocation. This security flaw affects supported software versions ranging from 12.2.3 through 12.2.15. The nature of this vulnerability is particularly concerning because it permits exploitation by an attacker with low privileges who possesses network access via the HTTP protocol. Unlike high-privilege exploits that require administrative credentials, this weakness allows a user with minimal initial access rights to escalate their influence over the system significantly. The attack vector being network-based and utilizing standard web protocols means that remote attackers can potentially trigger the flaw without any physical proximity or complex local setup, provided they have valid but low-level authentication credentials for the Oracle Field Service application.
The technical implications of this vulnerability are severe due to its broad impact on confidentiality, integrity, and availability. Successful exploitation enables an attacker to gain unauthorized access to critical data stored within the system. This includes sensitive customer information, service history, resource locations, and operational metrics that are central to business continuity. Beyond mere data exfiltration, the flaw allows for unauthorized modifications to the database state. Attackers can perform insert, update, or delete operations on accessible data sets, which compromises the integrity of the records maintained by the organization. This capability could lead to fabricated service requests, altered schedules, or deletion of essential operational logs, thereby disrupting business processes and potentially causing financial loss or reputational damage through manipulated field service activities.
In addition to compromising data confidentiality and integrity, this vulnerability also impacts system availability. The flaw can be leveraged to cause a partial denial of service against Oracle Field Service. While the impact is described as partial rather than total, even intermittent unavailability of critical operational tools can halt field operations, delay customer support responses, and reduce overall organizational efficiency. The combination of these three impact areas results in a CVSS 3.1 Base Score of 7.6, classified as High severity. This score reflects the significant risk posed to organizations relying on this software for their core service delivery mechanisms. The specific vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L) indicates that while access complexity is low and no user interaction is required, the privilege requirement of being a low-privileged user makes this a realistic threat for insider threats or compromised lower-level accounts.
From an industry standards perspective, this vulnerability aligns with Common Weakness Enumeration categories such as CWE-269 Improper Privilege Management and CWE-862 Missing Authorization. The ability to access critical data without sufficient permissions points directly to broken access control mechanisms where the application fails to enforce proper restrictions on authenticated users. Furthermore, the potential for unauthorized updates and deletes relates closely to CWE-732 Incorrect Permission Assignment for Critical Resource. In terms of adversary tactics, this exploit maps to MITRE ATT&CK techniques involving Initial Access via valid credentials and potentially Lateral Movement if the compromised low-level account is used as a foothold to access other parts of the E-Business Suite environment. The lack of required user interaction also aligns with automated exploitation patterns often seen in web application attacks where scripts can repeatedly attempt to trigger the flaw against exposed endpoints.
Mitigation strategies must prioritize immediate patching and rigorous identity management practices. Oracle has likely released patches for this vulnerability, so organizations should apply the latest security updates for their specific version of Oracle E-Business Suite immediately. For environments where patching is not instantly feasible, network segmentation can help by restricting HTTP access to the Internal Operations component only from trusted IP ranges or application servers rather than exposing it broadly across the corporate network. Implementing strict role-based access control (RBAC) is also critical; administrators should review user accounts with low privileges and ensure they adhere to the principle of least privilege, removing any unnecessary permissions that could be abused in conjunction with this flaw. Additionally, deploying Web Application Firewalls can provide an additional layer of defense by detecting and blocking anomalous HTTP requests that attempt to exploit known vulnerability patterns associated with Oracle Field Service internal operations. Continuous monitoring for unusual data access or modification activities should also be implemented to detect potential exploitation attempts early.