CVE-2026-83445 in Complex Maintenance, Repair and Overhaul
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Complex Maintenance, Repair and Overhaul 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 HTTPS to compromise Oracle Complex Maintenance, Repair and Overhaul. Successful attacks of this vulnerability can result in takeover of Oracle Complex Maintenance, Repair and Overhaul. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Internal Operations component of Oracle Complex Maintenance Repair and Overhaul, a critical module within the broader Oracle E-Business Suite ecosystem designed to manage complex industrial maintenance workflows. This security flaw affects supported software versions ranging from 12.2.3 through 12.2.15, representing a significant portion of deployed enterprise environments that rely on these specific releases for their operational continuity. The nature of this vulnerability is particularly concerning because it allows an attacker with low privileges and network access via the HTTPS protocol to execute unauthorized actions against the application server. Unlike vulnerabilities requiring high-level administrative credentials or complex user interaction, this flaw can be exploited by authenticated users who possess minimal initial permissions, thereby lowering the barrier for entry significantly in environments where internal trust boundaries are not strictly enforced.
From a technical perspective, the vulnerability enables an attacker to compromise the integrity and confidentiality of the system through network-based interactions over secure transport layers. The ability to escalate privileges or manipulate core operational functions without requiring high-level access suggests a fundamental flaw in how input validation or authorization checks are implemented within the Internal Operations module. This type of weakness often stems from improper enforcement of access controls, allowing low-privileged users to perform actions reserved for administrators or triggering unintended code execution paths that bypass standard security mechanisms. The exploitation vector being network-accessible via HTTPS means that remote attackers can leverage this flaw without physical proximity to the target infrastructure, making it a high-risk threat in internet-facing deployments or poorly segmented internal networks where lateral movement is possible after initial compromise.
The operational impact of successfully exploiting this vulnerability is severe, as indicated by its CVSS 3.1 base score of 8.8, which classifies it as High severity with significant impacts on confidentiality, integrity, and availability. A successful attack can lead to the complete takeover of the Oracle Complex Maintenance Repair and Overhaul environment, granting the attacker full control over sensitive maintenance data, operational workflows, and potentially underlying database structures. This level of compromise allows for extensive data exfiltration, modification of critical business records, or disruption of services essential for industrial operations. The broad impact across all three pillars of the CIA triad underscores the potential for catastrophic business interruption and significant financial loss due to both direct theft of intellectual property and indirect costs associated with system downtime and remediation efforts.
In terms of industry standard classifications, this vulnerability aligns closely with CWE-269 Improper Privilege Management or CWE-862 Missing Authorization, depending on the specific technical mechanism exploited within the internal operations logic. Furthermore, from a tactical perspective relevant to threat intelligence frameworks such as MITRE ATT&CK, exploitation would likely fall under techniques involving Initial Access via valid accounts and subsequent privilege escalation or lateral movement within the application layer. Attackers leveraging this flaw could establish persistent access points for further infiltration into connected systems, making it a critical pivot point in advanced persistent threat campaigns targeting enterprise resource planning environments.
Mitigation strategies must prioritize immediate patching to the latest available version of Oracle E-Business Suite that addresses this specific issue, as vendor-provided patches are typically designed to correct the underlying code flaws responsible for these authorization bypasses. In scenarios where immediate patching is not feasible due to operational constraints or testing requirements, organizations should implement strict network segmentation to isolate the affected systems from untrusted networks and enforce rigorous access control policies that limit HTTPS exposure only to necessary administrative endpoints. Additionally, deploying web application firewalls with rules tuned to detect anomalous behavior patterns associated with low-privilege privilege escalation attempts can provide a layer of defense-in-depth while permanent fixes are applied. Regular auditing of user permissions and review of internal operations logs for unusual activity related to the Internal Operations component is also recommended to enhance visibility into potential exploitation attempts.