CVE-2026-83198 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 require human interaction from a person other than the attacker and while the vulnerability is in Oracle Field Service, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Field Service accessible data as well as unauthorized read access to a subset of Oracle Field Service accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).
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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 module integrated into the broader Oracle E-Business Suite ecosystem. This security flaw affects supported software versions ranging from 12.2.3 through 12.2.15. The nature of this defect allows for an exploitation scenario that is relatively straightforward due to its low complexity requirements and accessibility via standard HTTP protocols. However, the attack vector necessitates a specific condition: it requires human interaction from a user other than the attacker. This typically implies a social engineering component where a victim must perform an action, such as clicking a malicious link or opening a crafted document, which triggers the vulnerability within the application context of that authenticated user.
From a technical perspective, this flaw represents a failure in proper access control validation when processing specific inputs via HTTP requests. While the attacker holds only low privileges, they can leverage the victim's session to execute unauthorized operations against data accessible by that victim. The core issue lies in the system's inability to correctly distinguish between legitimate user actions and maliciously crafted requests that attempt to manipulate server-side state or retrieve sensitive information beyond the intended scope of the current privilege level. This type of flaw is commonly categorized under CWE-269, which addresses Improper Privilege Management, specifically where a lower-privileged actor can escalate their effective permissions through interaction with higher-privileged contexts or by exploiting logic errors in access control mechanisms.
The operational impact of this vulnerability extends beyond the immediate compromise of Oracle Field Service data due to its potential for scope change within the E-Business Suite environment. A successful exploitation results in unauthorized read, update, insert, and delete operations on a subset of accessible data. The confidentiality impact is moderate, as attackers can extract sensitive information stored within the field service modules. Simultaneously, integrity impacts are significant because adversaries can alter or destroy critical business records related to field operations, scheduling, and customer interactions. This dual impact aligns with the CVSS 3.1 base score of 5.4, reflecting a medium severity rating driven by both confidentiality and integrity compromises without direct denial-of-service effects on availability.
In terms of threat modeling and adversary behavior, this vulnerability maps to ATT&CK technique T1078, Valid Accounts, as it relies on the use of legitimate credentials with low privileges. Furthermore, the requirement for human interaction places it within the realm of social engineering tactics often associated with initial access or privilege escalation phases in an attack chain. The scope change aspect indicates that compromising this component could serve as a pivot point to affect other integrated products within the Oracle E-Business Suite architecture, thereby amplifying the risk profile significantly beyond the isolated field service module.
To mitigate these risks, organizations must ensure that all instances of Oracle Field Service are updated to the latest available patch level provided by Oracle for their respective version branches. Since exploitation requires user interaction, implementing strict web application firewalls with behavioral analysis capabilities can help detect and block anomalous HTTP requests characteristic of this exploit before they reach the application layer. Additionally, enforcing multi-factor authentication reduces the likelihood that compromised low-privilege accounts can be effectively leveraged by attackers. Regular security awareness training for employees is also critical to mitigate the social engineering aspect required for successful exploitation. Finally, applying the principle of least privilege ensures that even if an account is compromised, the amount of data accessible remains minimized, thereby limiting the potential damage from unauthorized read or write operations.