CVE-2026-86576 in Integrated Management
Summary
by MITRE • 10/27/2026
Heap-based Buffer Overflow Vulnerability in JP1 Products.
This issue affects JP1/Integrated Management 3 - Manager: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Manager: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent Minimal Edition: from 13-00 before 13-50-31; JP1/Base: from 11-00 before 12-50-54.
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Analysis
by VulDB Data Team • 10/27/2026
The identified vulnerability represents a critical heap-based buffer overflow within the core components of Fujitsu’s Job Processing and Automation (JP1) suite, specifically affecting versions prior to the specified patch levels for Manager, Agent, and Base modules. This class of memory corruption error occurs when an application writes more data to a block of dynamically allocated memory on the heap than it was intended to hold. In the context of enterprise job scheduling systems like JP1, which handle complex workflows, resource allocation, and inter-process communication, such flaws are particularly dangerous because they reside in long-running processes that often operate with elevated privileges or access sensitive operational data. The vulnerability is present across multiple product lines including JP1/Integrated Management 3 Manager, JP1/Automatic Job Management System 3 Manager and Agent components, as well as the foundational JP1/Base module, indicating a systemic issue likely rooted in shared libraries or common processing routines used by these distinct but related services.
From a technical perspective, heap-based buffer overflows allow an attacker to overwrite adjacent memory structures on the heap, which can lead to arbitrary code execution if the overwritten data includes function pointers, object vtables, or other control flow mechanisms. Unlike stack-based overflows that primarily affect local variables and return addresses within a single thread's context, heap corruption can impact global state and shared resources across multiple threads or processes. For JP1 components, this could mean manipulating job queue structures, altering authentication tokens stored in memory, or corrupting internal configuration objects. The specific version ranges affected suggest that the flaw has existed since at least version 13-00 for most modules and 11-00 for the Base module, highlighting a long-standing deficiency in input validation or bounds checking within these legacy codebases before the introduction of fix version 13-50-31 for managers and agents, and 12-50-54 for the base component.
The operational impact of this vulnerability is severe, potentially allowing remote attackers to execute arbitrary commands on the affected system with the privileges of the JP1 service account. If an attacker can trigger the overflow through network-accessible interfaces or by injecting malicious job definitions into the scheduling queue, they could gain full control over the host machine. This compromises the confidentiality, integrity, and availability of the entire IT infrastructure managed by that instance of JP1. Given that these systems often orchestrate critical business processes such as financial transactions, data backups, and system maintenance windows, successful exploitation could lead to significant operational disruption, data leakage, or serve as a pivot point for further lateral movement within an enterprise network. The presence in the Agent component also implies that compromised endpoints managed by JP1 could be used to attack other systems connected via the job execution protocols.
This vulnerability aligns with Common Weakness Enumeration (CWE) identifier CWE-120, which describes Buffer Copy without Checking Size of Input, and more specifically CWE-787, Out-of-bounds Write in a Heap Allocation. In terms of adversary tactics, this flaw facilitates initial access or privilege escalation techniques documented in the MITRE ATT&CK framework, particularly those involving memory corruption exploitation to bypass security controls like Data Execution Prevention (DEP) or Address Space Layout Randomization (ASLR). Attackers would typically craft malformed input packets or job submission requests that exceed expected buffer limits, leveraging heap spraying techniques to increase the probability of overwriting critical control data with shellcode.
Mitigation requires immediate action by system administrators and security operations teams responsible for maintaining these environments. The primary remediation step is to apply the vendor-provided patches immediately, updating all affected JP1 components to version 13-50-31 or later for Managers and Agents, and version 12-50-54 or later for Base modules. Until patching can be performed in a maintenance window, organizations should implement network segmentation strategies to restrict access to the ports used by JP1 services only from trusted management stations. Additionally, enabling strict input validation at any proxy or gateway preceding these services can help filter out malformed requests that exhibit patterns of buffer overflow attempts. Regular vulnerability scanning and monitoring for anomalous memory usage in JP1 processes are also recommended to detect potential exploitation attempts early.