CVE-2026-62589 in Siebel CRM Integration
Summary
by MITRE • 08/19/2026
Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: Open Integration). Supported versions that are affected are 25.12-26.6. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration. While the vulnerability is in Siebel CRM Integration, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Integration accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Integration accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Open Integration component of Oracle Siebel CRM, specifically affecting supported versions ranging from 25.12 through 26.6. This security flaw represents a critical risk to organizations relying on this enterprise resource planning and customer relationship management platform for their operational workflows. The core technical deficiency allows an unauthenticated attacker who possesses network access via the HTTP protocol to compromise the integrity of the Siebel CRM Integration subsystem. Unlike many vulnerabilities that require user interaction or specific authentication credentials, this flaw can be exploited remotely without prior login, significantly lowering the barrier to entry for malicious actors targeting these systems.
The operational impact of this vulnerability is severe due to its potential for scope change. Although the technical root cause is located within the Siebel CRM Integration module, successful exploitation does not remain contained within that specific component. Instead, it can lead to a broader compromise of additional products and services connected to or dependent on the affected integration layer. This lateral movement capability means that an attacker who gains foothold through this vulnerability may pivot to other critical systems, thereby expanding the blast radius beyond the initial target and potentially disrupting entire business operations rather than just isolated data points.
Successful exploitation results in significant unauthorized access to both confidential information and system integrity controls. Attackers can achieve complete or partial access to all Siebel CRM Integration accessible data, which typically includes sensitive customer records, financial transactions, and proprietary business intelligence. Furthermore, the vulnerability permits the unauthorized creation, deletion, or modification of critical data within this scope. This capability directly impacts the confidentiality and integrity aspects of the security triad, allowing adversaries to exfiltrate valuable intellectual property or alter transactional records without detection, which can lead to substantial financial loss and regulatory non-compliance.
The severity of this issue is quantified by a CVSS 3.1 Base Score of 8.7, classified as High severity. The vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N) indicates that while the attack complexity is high and requires specific conditions to execute successfully, the lack of required privileges and user interaction makes it particularly dangerous for network-facing services. The scope change from C to S further amplifies the risk by confirming that impacts extend beyond the vulnerable component. In terms of industry standards mapping, this vulnerability aligns with CWE-287 Improper Authentication as it allows unauthenticated access, and potentially CWE-601 URL Redirection to Untrusted Site may be relevant if the exploitation involves redirecting users or data flows. From a tactical perspective, this behavior is consistent with ATT&CK techniques such as T1190 Exploit Public-Facing Application for initial access and T1530 Data from Cloud Storage for exfiltration if sensitive data is retrieved post-exploitation.
Mitigation strategies must prioritize immediate patching to the latest supported version of Oracle Siebel CRM that resolves this specific integration flaw, as vendor-provided updates are typically designed to address these authentication bypasses directly. In environments where immediate patching is not feasible due to operational constraints, network-level controls should be implemented to restrict HTTP access to the affected components strictly from trusted IP ranges or internal subnets. Web Application Firewalls can also be configured with rulesets specifically tuned to detect and block exploitation attempts targeting this integration endpoint, particularly by monitoring for anomalous request patterns associated with high-complexity exploits that attempt to bypass standard authentication checks. Continuous monitoring of access logs for unauthorized data modification events is essential to detect potential compromises early in the kill chain.