CVE-2026-70910 in Siebel CRM Integration
Summary
by MITRE • 08/19/2026
Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: REST). Supported versions that are affected are 17.0-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM Integration accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the REST API component of Oracle Siebel CRM Integration, specifically affecting supported versions ranging from 17.0 through 26.6. This security flaw represents a critical failure in access control mechanisms that govern how unauthenticated users interact with the integration layer via HTTP protocols. The core technical issue stems from insufficient validation or enforcement of authentication requirements for specific REST endpoints, allowing external actors to bypass standard identity verification processes entirely. Because the vulnerability is easily exploitable and does not require user interaction or complex preconditions, it presents a significant risk surface that can be leveraged by attackers with basic networking capabilities to gain unauthorized footholds within the enterprise environment.
From an operational perspective, this flaw enables unauthenticated remote attackers who have network access to compromise the integrity of Siebel CRM Integration services. The primary consequence is a severe breach of confidentiality, as successful exploitation allows the attacker to retrieve sensitive data that should be restricted to authorized personnel only. Depending on the specific configuration and exposed endpoints, this can range from accessing critical business records such as customer personal information, financial details, or proprietary sales strategies, to potentially gaining complete access to all data accessible through the integration layer. The impact is strictly confined to confidentiality in terms of the CVSS scoring model, meaning that while data exfiltration is highly likely, direct modification of system state or denial of service are not the primary vectors associated with this specific flaw, although secondary impacts may occur depending on downstream application logic.
In alignment with industry standards, this vulnerability maps directly to CWE-287, which describes Improper Authentication, and more specifically aligns with CWE-306 regarding Missing Authentication for Critical Function. The attack vector corresponds to ATT&CK technique T1078, Valid Accounts or Unauthenticated Access, where adversaries exploit misconfigurations to gain initial access without credentials. This type of vulnerability is particularly dangerous in enterprise environments because Siebel CRM systems often serve as central hubs for customer relationship data, making them high-value targets for state-sponsored actors and criminal syndicates seeking intellectual property theft or espionage. The network-based nature of the attack means that it can be executed from anywhere on the internet if the service ports are exposed, bypassing internal perimeter defenses that rely on authentication checks rather than strict IP whitelisting or zero-trust architectures.
Mitigation strategies must prioritize immediate remediation through vendor-provided patches and updates to bring all instances within the affected version range up to a secure baseline. Organizations should implement network-level controls such as Web Application Firewalls configured with rulesets specifically designed to detect anomalous REST API traffic patterns indicative of unauthenticated access attempts. Additionally, it is crucial to review firewall configurations to ensure that Siebel CRM Integration ports are not unnecessarily exposed to the public internet and are instead restricted to trusted internal subnets or require VPN-based authentication before reaching the application layer. Regular security assessments and penetration testing focused on API endpoints should be conducted to verify that authentication controls are functioning as intended across all supported versions, ensuring that no legacy configurations remain vulnerable to exploitation by automated scanning tools commonly used in reconnaissance phases of cyber attacks.