CVE-2026-21928

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{"analysis": {"en": {"generated_at": "2026-04-18T04:38:56.214967+00:00", "value": {"mitigation_remediation": ["Apply the official Oracle Solaris 11 patch released in the January 2026 security update cycle", "Restrict network access to the Solaris system, especially to services that interface directly with the kernel", "Adopt Oracle\u2019s latest security hardening guidelines to limit exposed data paths", "Monitor network traffic for unusual access patterns that might indicate exploitation attempts"], "summary": {"action": "Apply patch", "impact": "Unauthorized data disclosure"}, "threat_synthesis": {"affected_systems": "Affected product: Oracle Solaris 11 from Oracle Corporation. The vulnerability is present in the supported version 11 and is not limited to any subversion numbers indicated in the advisory.", "description_and_impact": "The CVE affects the kernel component of Oracle Solaris 11 and permits unauthenticated attackers with TCP network access to read a subset of data that the operating system exposes. The flaw arises from missing confidentiality controls, enabling an adversary to obtain sensitive information without user interaction. The disclosed data could include system configuration or confidential files, impacting confidentiality while leaving integrity and availability unaffected.", "risk_and_exploitability": "CVSS 3.1 Base Score of 5.3 indicates moderate severity with a confidentiality impact. EPSS is reported as less than 1%, suggesting a low but nonzero probability of exploitation in the wild, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is a network-based TCP connection to a service that interfaces with the kernel, and the exploitation does not require any special privileges or user interaction, making it relatively easy for an attacker to achieve the intended data read if the system is reachable over the network."}}}}, "created": "2026-04-18T04:45:36.864854+00:00", "title": "Unauthorized Data Disclosure via Network in Oracle Solaris 11 Kernel", "updated": "2026-04-18T04:45:36.864864+00:00", "vendors": []}