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high advisory

CVE-2026-46826 - Oracle Payroll Vulnerability Allows Takeover

CVE-2026-46826 is a vulnerability in Oracle Payroll within Oracle E-Business Suite, where a low-privileged attacker can achieve a system takeover via network access over HTTPS.

CVE-2026-46826 is a critical vulnerability affecting Oracle Payroll, a component of Oracle E-Business Suite. The vulnerability exists within the Internal Operations component and impacts supported versions 12.2.3 through 12.2.15. This easily exploitable vulnerability allows a low-privileged attacker with network access via HTTPS to compromise the Oracle Payroll system. Successful exploitation can lead to a complete takeover of the Oracle Payroll application, posing significant risks to data confidentiality, integrity, and system availability. Organizations using vulnerable versions of Oracle E-Business Suite are at risk.

Attack Chain

  1. Attacker gains low-privileged network access to the Oracle E-Business Suite via HTTPS.
  2. Attacker crafts a malicious HTTPS request targeting the vulnerable Internal Operations component of Oracle Payroll.
  3. The crafted request exploits CVE-2026-46826, bypassing authorization controls due to an input validation flaw.
  4. Successful exploitation allows the attacker to execute arbitrary code within the context of the Oracle Payroll application.
  5. The attacker escalates privileges within the Oracle Payroll application, leveraging exposed APIs or misconfigured roles.
  6. Attacker gains complete control over the Oracle Payroll system.
  7. Attacker can now access, modify, or delete sensitive payroll data, including employee salaries, banking information, and other personal details.
  8. The attacker may install a backdoor or persistence mechanism to maintain unauthorized access to the compromised system for future malicious activities.

Impact

Successful exploitation of CVE-2026-46826 allows a low-privileged attacker to achieve a complete takeover of the Oracle Payroll system. This can lead to significant data breaches, financial losses, and reputational damage. Sensitive payroll data, including employee salaries, banking information, and other personal details, could be exposed or manipulated. The vulnerability affects versions 12.2.3 through 12.2.15 of Oracle E-Business Suite.

Recommendation

  • Apply the Oracle patch for CVE-2026-46826 to all affected Oracle E-Business Suite installations running Oracle Payroll versions 12.2.3-12.2.15.
  • Deploy the Sigma rule “Detect CVE-2026-46826 Exploitation Attempt” to your SIEM to identify potentially malicious HTTPS requests targeting the vulnerable component.
  • Review and restrict network access to the Oracle E-Business Suite to only authorized users and systems.
  • Implement strong password policies and multi-factor authentication to mitigate the risk of unauthorized access.

Detection coverage 2

Detect CVE-2026-46826 Exploitation Attempt

high

Detects CVE-2026-46826 exploitation attempt - suspicious HTTPS requests targeting the Oracle Payroll Internal Operations component

sigma tactics: initial_access techniques: T1190 sources: webserver

Detect CVE-2026-46826 Exploitation - Privilege Escalation

medium

Detects CVE-2026-46826 post exploitation - execution of privileged commands after initial access

sigma tactics: privilege_escalation techniques: T1068 sources: process_creation, windows

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