CVE-2026-101435 in PeopleSoft Enterprise PeopleTools
Summary
by MITRE • 10/21/2026
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Porting). Supported versions that are affected are 8.61-8.63. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where PeopleSoft Enterprise PeopleTools executes to compromise PeopleSoft Enterprise PeopleTools. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of PeopleSoft Enterprise PeopleTools as well as unauthorized update, insert or delete access to some of PeopleSoft Enterprise PeopleTools accessible data and unauthorized read access to a subset of PeopleSoft Enterprise PeopleTools accessible data. CVSS 3.1 Base Score 6.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Porting component of Oracle PeopleSoft Enterprise PeopleTools, specifically affecting versions ranging from 8.61 through 8.63. This security flaw is classified as a critical infrastructure weakness that allows for exploitation by an attacker with low privileges who has established valid logon access to the underlying server environment where the PeopleSoft application executes. The nature of this vulnerability suggests a failure in input validation or resource management within the porting utilities, which are typically used for migrating data and configuration settings between different environments or database schemas. Because the attack vector requires local authentication on the infrastructure hosting the application, it is categorized under Local Attack Vector (AV:L) with Low Complexity (AC:L), indicating that while an attacker must first gain a foothold within the network perimeter, the exploitation process itself does not require complex conditions or user interaction beyond initial access.
From a technical perspective, this vulnerability manifests in three distinct areas of security impact: confidentiality, integrity, and availability, resulting in a CVSS 3.1 Base Score of 6.6. The most severe consequence is related to Availability (A:H), where successful exploitation can lead to a complete denial of service by causing the PeopleSoft Enterprise PeopleTools application to hang or crash repeatedly. This operational disruption effectively halts business processes dependent on the platform, leading to significant downtime and potential data inconsistency if transactions are interrupted mid-execution. Furthermore, the vulnerability compromises Integrity (I:L) by allowing unauthorized updates, inserts, or deletes against accessible data within the system. This means an attacker could alter critical configuration settings, modify user permissions, or corrupt application logic files, thereby undermining the trustworthiness of the entire enterprise resource planning ecosystem managed by PeopleSoft.
In addition to integrity and availability concerns, there is a measurable impact on Confidentiality (C:L). The flaw permits unauthorized read access to a subset of data accessible by the compromised account. While this may not expose all sensitive information in the database, it allows an attacker to exfiltrate specific records or configuration details that could be leveraged for further lateral movement within the network. This aligns with common vulnerability classifications such as CWE-20 Improper Input Validation and CWE-400 Uncontrolled Resource Consumption, which describe scenarios where insufficient checks on input data lead to resource exhaustion or unauthorized access states. The ability to cause a hang or crash is particularly dangerous in production environments because it can be triggered repeatedly without detection until service degradation becomes apparent, making incident response more challenging due to the lack of clear error logs that might otherwise indicate an attack pattern.
The operational impact extends beyond immediate system instability. A compromised PeopleTools environment can serve as a pivot point for attackers aiming to escalate privileges or move laterally toward higher-value assets such as core financial databases or human resources systems. Since PeopleSoft often handles sensitive corporate data, the combination of unauthorized read access and potential integrity violations poses significant regulatory compliance risks under frameworks like GDPR, HIPAA, or SOX. The requirement for low-privileged logon means that any compromised user account with minimal rights can be leveraged to execute this attack, highlighting a deficiency in principle-of-least-privilege enforcement within the application's internal security model. Attackers do not need social engineering or complex exploit chains; they simply require valid credentials and network connectivity to the host server, making proactive monitoring of authentication events crucial for detection.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary defense is applying the latest Oracle Critical Patch Update (CPU) that addresses this specific vulnerability in PeopleTools versions 8.61 through 8.63. Organizations should prioritize patching these systems to eliminate the root cause of the flaw. In addition to software updates, implementing strict network segmentation can limit exposure by ensuring that only authorized administrative workstations or application servers have access to the infrastructure hosting PeopleSoft. Access control lists and firewall rules should be reviewed to ensure that no unnecessary low-privileged accounts retain direct logon capabilities to production servers unless absolutely required for operational tasks.
Furthermore, organizations should enhance their monitoring capabilities to detect signs of exploitation attempts. This includes configuring audit logs to track unusual patterns in file system modifications or database transactions initiated by the Porting component. Intrusion detection systems should be tuned to identify repeated connection attempts or resource consumption spikes that correlate with denial-of-service behaviors. Regular vulnerability assessments and penetration testing focused on application-layer flaws can help identify similar weaknesses before they are exploited. By combining timely patch management with robust access controls and continuous monitoring, enterprises can significantly reduce the risk associated with this vulnerability in their PeopleSoft environments.