CVE-2026-70926 in Workflow
Summary
by MITRE • 08/19/2026
Vulnerability in the Oracle Workflow product of Oracle E-Business Suite (component: Workflow Notification Mailer). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via SMTP to compromise Oracle Workflow. Successful attacks of this vulnerability can result in takeover of Oracle Workflow. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Workflow Notification Mailer component of Oracle E-Business Suite, specifically affecting versions ranging from 12.2.3 through 12.2.15. This critical security flaw allows an unauthenticated attacker to compromise the integrity and availability of the system by exploiting weaknesses in how the mailer handles incoming Simple Mail Transfer Protocol connections. The vulnerability is characterized by its ease of exploitation, requiring no prior authentication or user interaction, which significantly lowers the barrier for entry for malicious actors targeting enterprise environments running these specific versions of Oracle E-Business Suite.
From a technical perspective, the flaw likely involves improper input validation or state management within the SMTP service handler that processes workflow notifications. By sending specially crafted packets over the network via SMTP, an attacker can trigger conditions that lead to unauthorized access control failures or memory corruption states. This exploitation path bypasses standard security controls because it operates at the protocol level before any user authentication mechanisms are engaged. The absence of required privileges for the initial attack vector means that even external threat actors with basic networking capabilities can initiate the compromise without needing valid credentials within the Oracle E-Business Suite environment.
The operational impact of this vulnerability is severe, as indicated by a CVSS 3.1 Base Score of 9.8, which denotes critical severity. The high score reflects significant impacts on confidentiality, integrity, and availability. Successful exploitation can result in complete takeover of the Oracle Workflow subsystem. This compromise allows attackers to manipulate workflow processes, potentially leading to unauthorized data exfiltration, modification of business logic execution paths, or disruption of notification services essential for enterprise operations. In a production environment, this could halt critical business workflows, cause data integrity issues across connected systems, and expose sensitive corporate information stored within the workflow context.
This vulnerability aligns with Common Weakness Enumeration categories such as CWE-287 Improper Authentication and CWE-94 Improper Control of Generation of Code or Command, often associated with injection attacks if code execution is involved in the takeover mechanism. In terms of the MITRE ATT&CK framework, this exploit maps to techniques involving Initial Access via network services and potentially Privilege Escalation depending on how the workflow subsystem interacts with underlying operating system privileges. The attack vector falls under Network-based exploitation where the attacker leverages exposed services to gain a foothold in the target infrastructure.
Mitigation strategies must prioritize immediate patching of all affected Oracle E-Business Suite instances to version 12.2.16 or later, which contains the necessary code fixes for this vulnerability. Organizations should also implement network segmentation to restrict SMTP traffic from untrusted networks to the specific servers hosting the Workflow Notification Mailer service. Additionally, deploying intrusion detection systems configured to monitor for anomalous SMTP patterns associated with exploitation attempts can provide an additional layer of defense. Regular auditing of access logs and monitoring for unexpected changes in workflow execution states are recommended operational practices to detect potential compromise early.