CVE-2026-60526
Summary
by MITRE • 07/22/2026
Vulnerability in Oracle Java SE (component: Installation). Supported versions that are affected are Oracle Java SE: 8u491 and 8u491-perf. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Java SE executes to compromise Oracle Java SE. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Java SE. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability resides within Oracle Java SE's installation component and affects specific versions including 8u491 and 8u491-perf, representing a significant security concern for systems running these Java runtime environments. The flaw manifests as a difficulty to exploit condition that requires an attacker with existing logon credentials to the target infrastructure where Oracle Java SE operates, indicating that while the vulnerability is not trivial to leverage, it does present a genuine risk when combined with existing access privileges. The attack scenario necessitates human interaction from individuals other than the primary attacker, suggesting that successful exploitation might involve social engineering tactics or manipulation of legitimate users to perform actions that facilitate the compromise.
The technical nature of this vulnerability allows for a complete takeover of Oracle Java SE execution environment, which represents a severe operational impact as it enables full control over the targeted Java runtime system. The CVSS 3.1 base score of 6.7 reflects the high severity across confidentiality, integrity, and availability impacts, with the vector indicating local attack access requirements, high complexity to exploit, low privilege needs, and required user interaction. This vulnerability can be leveraged through APIs within the targeted component, making web services that interface with these APIs potential attack vectors for exploitation.
The broader implications extend beyond server environments to Java deployments in client systems running sandboxed applications such as Java Web Start applications or applets, particularly when these clients execute untrusted code from internet sources relying on the Java sandbox security model. This demonstrates how the vulnerability affects not just enterprise server installations but also client-side Java execution contexts where users may inadvertently load malicious code that exploits this weakness. The attack surface expands significantly due to the sandboxed nature of these applications and their reliance on Java's security model for protection.
Organizations must consider implementing multiple defensive measures to address this vulnerability, including immediate patching of affected Java SE versions to prevent exploitation, network segmentation to limit access to systems running vulnerable Java installations, and enhanced monitoring for suspicious activities in Java execution environments. Additionally, administrators should review and restrict permissions for Java Web Start applications and applets, particularly those that load content from untrusted sources. The vulnerability's classification aligns with CWE categories related to installation and runtime environment security flaws, potentially mapping to ATT&CK techniques involving privilege escalation and persistence through compromised Java installations.
The human interaction requirement suggests that user awareness training becomes critical in preventing successful exploitation, as attackers may need to manipulate legitimate users into performing actions that enable the vulnerability to be exploited. This aspect of the vulnerability highlights the importance of comprehensive security awareness programs alongside technical controls. Organizations should also consider implementing application whitelisting policies that restrict which Java applications can execute on systems, particularly in environments where the vulnerable Java runtime is present and must remain operational for business functions.
Security teams should conduct thorough assessments of their Java deployment environments to identify all systems running affected versions and evaluate the risk of exploitation based on existing access controls and network configurations. The vulnerability's impact across multiple deployment scenarios indicates that comprehensive remediation efforts are necessary, including not only patching but also reviewing and hardening Java security settings in both server and client environments where vulnerable installations exist.
This vulnerability demonstrates the ongoing challenges in securing Java runtime environments, particularly when considering the complex interplay between installation components, execution contexts, and user interaction requirements. The CVSS scoring reflects the serious nature of potential compromise, with high impacts across all three core security principles. Organizations must prioritize remediation efforts while simultaneously strengthening their overall Java security posture through proper configuration management, access controls, and continuous monitoring of Java runtime environments to prevent exploitation and maintain system integrity.
The attack vector through APIs and web services indicates that organizations should also review their service interfaces that interact with vulnerable Java components, ensuring proper input validation and authentication measures are implemented to prevent unauthorized access to the affected installation functionality. This vulnerability serves as a reminder of the critical importance of maintaining current security patches for runtime environments and the potential consequences when attackers can leverage seemingly minor installation flaws to achieve complete system compromise.