CVE-2026-77697 in ManageEngine Endpoint Central
Summary
by MITRE • 09/07/2026
Zohocorp ManageEngine Endpoint Central versions below 11.4.2540.23 are vulnerable to Privilege Escalation During JAR Extraction
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Analysis
by VulDB Data Team • 09/07/2026
The vulnerability identified in Zoho Corporation's ManageEngine Endpoint Central, specifically affecting versions prior to build 11.4.2540.23, represents a critical security flaw centered on the improper handling of Java Archive (JAR) files during system operations. This privilege escalation issue arises from insufficient validation and sanitization mechanisms applied when the application extracts or processes JAR artifacts. In many enterprise management consoles, JAR files are frequently utilized for deploying agents, updating components, or executing remote commands. When an attacker can influence the content of these archives—either by tricking a user into downloading a maliciously crafted file or by exploiting another vector to inject such a payload—the application's extraction logic becomes the attack surface. The core technical flaw lies in the lack of strict constraints on the paths and filenames within the extracted files, allowing for directory traversal attacks that can write executable code outside the intended sandboxed directories.
From a technical perspective, this vulnerability aligns with CWE-94, commonly known as Improper Control of Generation of Code (Code Injection), or more specifically CWE-22: Improvement Limitation on Path Traversal in File Operations. When the JAR extraction routine fails to properly canonicalize file paths or restrict output locations, an attacker can craft a malicious archive containing files with names that include relative path sequences such as ../.. etc. Upon extraction, these sequences resolve to directories outside the application's designated working directory, potentially landing directly into system-critical folders like /etc on Linux systems or Windows System32 directories depending on the deployment environment. If the extracted file is an executable script or a compiled binary with appropriate permissions, it can be executed by the service account running Endpoint Central, which typically possesses elevated privileges necessary for endpoint management tasks.
The operational impact of this vulnerability is severe due to its classification as a privilege escalation vector. ManageEngine Endpoint Central operates with high-level system access to monitor and control endpoints across an organization's network. An attacker who successfully exploits this flaw can achieve arbitrary code execution under the context of the service account, which often has administrative rights over managed devices. This effectively grants the attacker full control over the affected server and potentially all connected endpoints. The threat actor could install persistent backdoors, exfiltrate sensitive data such as credentials stored in configuration files or databases, disable security agents on remote machines, or pivot laterally to other systems within the internal network. Given that Endpoint Central is often a central hub for IT operations, compromising it provides a strategic foothold with significant lateral movement potential.
This vulnerability maps directly to several techniques in the MITRE ATT&CK framework. The initial access and execution phases are covered by T1059: Command and Scripting Interpreter or T1204: User Execution if social engineering is involved, but the core exploitation mechanism relates to T1068: Exploitation for Privilege Escalation. Furthermore, the ability to write files in unintended locations corresponds to T1537: Transfer Data to Cloud Account or local file system manipulation techniques used to establish persistence. The lack of proper input validation during archive processing is a classic example of CWE-20: Improper Input Validation, which serves as the root cause allowing the subsequent privilege escalation and code injection attacks.
Mitigation strategies must prioritize immediate patching and defensive configuration changes. Administrators should upgrade ManageEngine Endpoint Central to version 11.4.2540.23 or later, where Zoho Corporation has addressed the JAR extraction logic by implementing strict path canonicalization and restricting file output to whitelisted directories only. In environments where immediate patching is not feasible due to operational constraints, network segmentation should be enforced to limit communication between untrusted networks and the Endpoint Central server. Additionally, running the service under a least-privilege account with minimal permissions can reduce the impact of successful exploitation by preventing the execution of arbitrary code with high-level system rights. Regular auditing of application logs for unusual file creation events in non-standard directories can also aid in early detection of attempted exploits.