CVE-2026-61223 in Converged Application Server
Summary
by MITRE • 07/22/2026
Vulnerability in the Oracle Communications Converged Application Server product of Oracle Communications (component: Security). Supported versions that are affected are 8.2 and 8.3. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCP/IP to compromise Oracle Communications Converged Application Server. While the vulnerability is in Oracle Communications Converged Application Server, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Communications Converged Application Server. CVSS 3.1 Base Score 9.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability resides within Oracle Communications Converged Application Server version 8.2 and 8.3, representing a critical security flaw in the Security component that has been classified as difficult to exploit yet highly dangerous. The vulnerability exists at the network level and can be triggered by unauthenticated attackers who gain access through TCP/IP connections, making it particularly concerning for organizations operating these systems in accessible network environments.
The technical nature of this flaw allows for a complete system compromise without requiring authentication credentials, which aligns with CWE-284 (Improper Access Control) and CWE-310 (Cryptographic Issues) categories. The CVSS 3.1 score of 9.0 indicates severe impact across all three core security principles: confidentiality, integrity, and availability. Attackers can leverage this vulnerability to gain full control over the affected server, potentially leading to data breaches, system manipulation, and service disruption.
The operational impact extends beyond the immediate Oracle Communications Converged Application Server as indicated by the scope change aspect of this vulnerability. This means that successful exploitation could result in cascading effects across interconnected systems and applications within the organization's infrastructure. The high attack complexity (AC:H) suggests that while sophisticated techniques may be required, the potential for significant damage remains substantial.
Security professionals should consider this vulnerability in relation to ATT&CK framework tactics such as TA0006 (Credential Access) and TA0040 (Impact) where attackers can escalate privileges and gain complete system control. Organizations using these specific versions must prioritize immediate patching or implementation of compensating controls. The network accessibility requirement means that proper firewall configurations, network segmentation, and monitoring should be implemented to detect and prevent unauthorized access attempts.
Mitigation strategies should include applying the latest security patches from Oracle, implementing network access controls to restrict TCP/IP communication to necessary endpoints only, deploying intrusion detection systems, and conducting regular vulnerability assessments. Given the high severity score and potential for system takeover, organizations should also consider emergency response procedures and incident response planning to address potential exploitation attempts. The scope change aspect requires broader assessment of connected systems to understand potential secondary impacts that may not be immediately obvious during initial vulnerability analysis.
This vulnerability demonstrates the critical importance of maintaining up-to-date security patches in enterprise communication infrastructure, particularly for components handling sensitive data and network communications. Organizations should also consider implementing zero-trust network architectures where all access is verified regardless of network location, reducing the attack surface for vulnerabilities like this one that can be exploited from external networks.