CVE-2026-61052 in Solaris
Summary
by MITRE • 07/22/2026
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Filesystems). The supported version that is affected is 11.4. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. CVSS 3.1 Base Score 5.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability resides within the filesystem component of Oracle Solaris version 11.4, representing a significant security weakness that can be exploited by attackers with minimal privileges. The flaw exists in the underlying file system implementation and affects systems where Oracle Solaris operates, making it particularly dangerous as it requires only a low-privileged user account to execute successful attacks. The vulnerability's classification as easily exploitable indicates that the attack vector is straightforward and does not require specialized knowledge or complex conditions to be successfully executed.
The technical nature of this vulnerability involves a flaw in how the filesystem component handles certain operations, leading to potential system instability and complete denial of service conditions. When exploited, the vulnerability can cause the operating system to hang indefinitely or experience repeatedly occurring crashes that effectively render the system unusable. This type of vulnerability typically stems from improper input validation, memory corruption issues, or inadequate resource management within the filesystem driver code. The attack can be initiated by a local user who has already established a login session on the target system, making it particularly concerning for environments where multiple users share the same infrastructure.
From an operational impact perspective, this vulnerability presents a substantial risk to system availability and business continuity. The potential for complete denial of service means that critical services running on Oracle Solaris systems could become unavailable, leading to production outages and data access interruptions. Organizations relying on Solaris for mission-critical applications face significant operational disruption when such vulnerabilities are exploited, as the system crashes can occur without warning and may require manual intervention to restore normal operations. The availability impact score of 5.5 on the CVSS scale indicates a moderate to high severity risk that demands immediate attention from system administrators.
The CVSS vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) clearly demonstrates the attack characteristics and potential damage, where AV:L indicates local attack access, AC:L shows low attack complexity, PR:L denotes low privilege requirements, and A:H reflects high availability impact. This vulnerability aligns with CWE categories related to resource management failures and system stability issues, particularly those involving operating system kernel components. According to ATT&CK framework, this would be classified under privilege escalation and denial of service tactics, as it allows local users to compromise system availability without requiring additional privileges.
Organizations should implement immediate mitigations including applying the latest Oracle security patches and updates specifically designed to address this filesystem vulnerability. System administrators should also consider implementing additional monitoring and alerting mechanisms to detect unusual system behavior that might indicate exploitation attempts. Network segmentation strategies can help limit the potential impact by preventing lateral movement within the network if a local user successfully exploits this vulnerability. Regular security assessments and vulnerability scanning should be conducted to identify any related issues in the Solaris environment, while access controls and user privilege management should be reviewed to minimize the attack surface for local users with legitimate system access.