CVE-2026-83413 in Coherence
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle Coherence executes to compromise Oracle Coherence. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Coherence accessible data. CVSS 3.1 Base Score 1.9 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N).
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Core component of Oracle Coherence, a key part of the Oracle Fusion Middleware suite used for distributed data management and caching across enterprise applications. This flaw affects specific supported versions including 12.2.1.4.0 as well as newer releases such as 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. The nature of this vulnerability is characterized by its high complexity in exploitation, which serves as a significant barrier for potential attackers who lack sophisticated capabilities or specific contextual knowledge of the target environment. It requires an attacker to possess high-level privileges on the infrastructure where Oracle Coherence operates, meaning that standard low-privilege users or external network-based attacks are unlikely to trigger this flaw directly without first achieving substantial access through other means.
From a technical perspective, the vulnerability allows for unauthorized modifications to data stored within the Oracle Coherence cluster. Specifically, it enables an attacker with sufficient privileges to perform unauthorized update, insert, or delete operations on accessible data sets managed by the middleware. This capability fundamentally undermines the integrity of the cached and distributed data layers that many critical business applications rely upon for real-time performance and consistency. The impact is strictly limited to integrity rather than confidentiality or availability, as indicated by the low severity score, but even minor unauthorized changes can lead to significant operational discrepancies in downstream systems that consume this corrupted data.
The operational impact of this vulnerability centers on data integrity assurance within enterprise environments. Since Oracle Coherence often serves as a high-speed cache for databases and application servers, any unauthorized modification could result in inconsistent states across the application tier. For instance, if financial records or user profiles are altered without authorization due to this flaw, it could lead to incorrect business logic execution, reporting errors, or compliance violations depending on the sensitivity of the data involved. However, because the attack vector requires local high-privileged access and has a high complexity rating, the immediate risk from remote adversaries is negligible. The primary threat model involves insider threats or attackers who have already compromised administrative accounts within the infrastructure hosting Coherence nodes.
In terms of industry standard classifications, this vulnerability aligns with CWE-269 which addresses Improper Privilege Management, as it exploits conditions where an actor has more privileges than intended for a specific operation context. It also relates to CWE-780 which covers Use of RSA Algorithm in a Non-Cryptographic Context if the underlying flaw involves weak cryptographic implementations used for data validation or integrity checks within Coherence's core logic. From a tactical standpoint, this falls under MITRE ATT&CK techniques related to Data Manipulation and potentially Defense Evasion if the attacker attempts to cover their tracks after modifying cached data. The CVSS 3.1 vector AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N confirms that while the impact is low, the prerequisites are stringent, limiting the attack surface significantly compared to remote code execution or privilege escalation flaws.
Mitigation strategies should focus on strict access control and monitoring rather than immediate patching if no exploit exists in the wild due to the high complexity of exploitation. Administrators must ensure that only trusted, highly privileged service accounts have access to the Oracle Coherence infrastructure, adhering to the principle of least privilege by removing unnecessary administrative rights from general user accounts or application services. Network segmentation should be enforced to isolate Coherence clusters from less secure network zones, ensuring that even if an attacker gains foothold elsewhere in the environment, lateral movement toward critical middleware components is restricted. Additionally, implementing comprehensive logging and monitoring for data modification events within Oracle Coherence can help detect anomalous activities indicative of this vulnerability being exploited. Regular audits of user permissions and privilege assignments on servers hosting these versions are essential to minimize the risk surface. Keeping systems updated with the latest security patches provided by Oracle remains the most effective long-term defense, as future updates may address the underlying code flaws that permit such unauthorized data manipulation despite high exploitation complexity.