CVE-2026-87417 in Solaris
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Image Packaging System). The supported version that is affected is 11.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Solaris accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified in the Oracle Solaris Image Packaging System represents a significant security risk for organizations relying on this operating system version 11.4 and potentially earlier supported releases. The core component affected is the package management infrastructure, which handles software installation, updates, and removals across the Solaris environment. This flaw allows an unauthenticated attacker to exploit weaknesses in how HTTP-based requests are processed by the packaging service. Because the vulnerability does not require authentication or user interaction, it presents a high-severity threat that can be leveraged remotely over standard network connections using the Hypertext Transfer Protocol. The ease of exploitation combined with the lack of required credentials makes this particularly dangerous for systems exposed to untrusted networks or the public internet without adequate perimeter defenses.
From a technical perspective, the flaw resides within the handling of HTTP requests directed at the Image Packaging System service. While specific implementation details such as buffer overflows or logic errors are not explicitly detailed in the summary, the impact profile indicates that maliciously crafted network traffic can trigger unauthorized access mechanisms. The attacker does not need to bypass any authentication gates because the vulnerability allows direct compromise through unauthenticated HTTP interactions. This suggests a failure in input validation or access control checks within the service layer responsible for processing package-related commands over web protocols. Such architectural weaknesses are common in legacy systems where older security models may not adequately account for modern attack vectors targeting network-facing services.
The operational impact of this vulnerability is severe, primarily centered around data confidentiality rather than integrity or availability. A successful exploitation enables an attacker to gain unauthorized access to critical system data stored on the affected Oracle Solaris instance. Depending on the configuration and privileges granted by the compromised service, this could escalate to complete access to all accessible data within the operating environment. This level of compromise allows for extensive information disclosure, potentially exposing sensitive corporate records, user credentials, proprietary software configurations, or other confidential assets hosted on the system. The CVSS 3.1 base score of 7.5 reflects these high confidentiality impacts, categorizing it as a High severity vulnerability that demands immediate attention to prevent data breaches and potential downstream attacks leveraging stolen information.
In terms of industry classification standards, this vulnerability aligns with CWE-284 Improper Access Control or potentially CWE-918 Server-Side Request Forgery if the exploitation involves manipulating server-side requests, though it most directly relates to weaknesses in authentication mechanisms allowing unauthenticated access. From a tactical standpoint within the MITRE ATT&CK framework, this activity corresponds to Initial Access techniques involving Exploitation for Client Execution or Credential Access via Unsecured Credentials, depending on how the attacker leverages the initial foothold. The attack vector is classified as Network with Low Attack Complexity and requires no User Interaction, emphasizing its suitability for automated scanning tools and widespread exploitation campaigns targeting vulnerable Solaris deployments.
Mitigation strategies should focus primarily on network segmentation and access control hardening to reduce the exposure surface of the Image Packaging System service. Organizations running Oracle Solaris 11.4 must ensure that the HTTP ports associated with package management are not directly accessible from untrusted networks such as the internet. Implementing strict firewall rules to restrict access to these services only from authorized internal update servers or administrative workstations is a critical first step. Additionally, enabling HTTPS instead of plain HTTP for any remote interactions can provide encryption and integrity protections that mitigate certain types of network-based exploitation attempts.
Beyond immediate network controls, applying the latest security patches provided by Oracle Systems is essential if available updates address this specific flaw in the Image Packaging System component. Administrators should regularly review Oracle Security Advisories to ensure all known vulnerabilities are patched promptly. For environments where patching cannot be immediately applied due to operational constraints, deploying Web Application Firewalls or intrusion prevention systems configured to detect and block malicious HTTP payloads targeting package management endpoints can serve as a compensating control. Continuous monitoring of system logs for unusual access patterns related to the packaging service will also aid in early detection of exploitation attempts before significant data loss occurs.