CVE-2026-101827 in HCM Common Architecture
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle HCM Common Architecture product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle HCM Common Architecture. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle HCM Common Architecture accessible data as well as unauthorized access to critical data or complete access to all Oracle HCM Common Architecture accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle HCM Common Architecture. CVSS 3.1 Base Score 7.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Internal Operations component of Oracle HCM Common Architecture, a core module of Oracle E-Business Suite affecting supported versions ranging from 12.2.3 through 12.2.15. This security flaw is classified as difficult to exploit due to its high attack complexity requirements, yet it presents significant risks because it can be leveraged by an attacker with low privileges who possesses network access via the HTTP protocol. The nature of this vulnerability allows for a compromise that extends beyond simple information disclosure, impacting the fundamental pillars of cybersecurity: confidentiality, integrity, and availability.
From a technical perspective, the flaw enables unauthorized operations on critical data within the Oracle HCM Common Architecture environment. Successful exploitation permits an attacker to create, delete, or modify sensitive records without proper authorization. This capability directly correlates with CWE-269 Improper Privilege Management and CWE-732 Incorrect Permission Assignment for Critical Resource, indicating that the application fails to adequately enforce access controls on internal operations exposed through HTTP endpoints. The vulnerability essentially allows a low-level user to escalate their effective privileges or bypass security checks designed to protect high-value data assets.
The operational impact of this vulnerability is severe, as evidenced by its CVSS 3.1 Base Score of 7.1. The vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L) highlights that while the attack requires high complexity and low privileges, it results in high impacts on both confidentiality and integrity, along with a lower but notable impact on availability. In terms of data security, an attacker can gain complete access to all Oracle HCM Common Architecture accessible data, leading to significant breaches of privacy and corporate secrets. This aligns with ATT&CK technique T1078 Valid Accounts, where attackers use legitimate credentials to move laterally or escalate privileges within the system.
Furthermore, the vulnerability allows for unauthorized modifications that can disrupt business processes by altering critical configuration settings or transactional data. The ability to cause a partial denial of service indicates that an attacker can also degrade system performance or render specific functionalities unavailable to legitimate users. This aspect relates to ATT&CK technique T1499 Endpoint Denial of Service, although in this context it is likely achieved through resource exhaustion caused by maliciously crafted requests rather than simple flooding. The combination of data theft and service disruption creates a multifaceted threat landscape that can severely impact organizational operations and compliance standing.
Mitigation strategies must focus on immediate patching to the latest available version of Oracle E-Business Suite, which includes fixes for this specific internal operation flaw. Organizations should also implement strict network segmentation to limit HTTP access to these components from untrusted networks. Additionally, deploying Web Application Firewalls with rulesets tuned to detect anomalous behavior in low-privilege user sessions can help mitigate exploitation attempts before they reach the application layer. Regular audits of privilege assignments and monitoring for unusual data modification patterns are essential defensive measures to reduce the risk associated with this vulnerability until patches are fully deployed across all affected instances.