CVE-2026-13594 in Log360
Summary
by MITRE • 11/03/2026
Zoho Corporation's ManageEngine Log360 and EventLog Analyzer versions 13062 and below are vulnerable to an issue that could allow an adversary to gain unauthorized access to the product.
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Analysis
by VulDB Data Team • 11/03/2026
The vulnerability identified in Zoho Corporation's ManageEngine Log360 and EventLog Analyzer, specifically affecting versions up through build number 13062, represents a critical security flaw that compromises the integrity of identity-based authentication mechanisms within these enterprise log management platforms. These products are widely deployed across organizations to aggregate, analyze, and retain logs from diverse sources including servers, network devices, applications, and cloud services, making them central components in many Security Operations Center architectures. The specific nature of this vulnerability allows an adversary to bypass standard access controls, effectively granting unauthorized entry into the administrative interface or sensitive data repositories managed by these tools. This type of flaw typically stems from improper validation of authentication tokens, session management errors, or insufficient checks on user privileges during request processing, which are classic indicators of broken access control vulnerabilities as defined in industry standards such as CWE-287 Improper Authentication and CWE-269 Unauthorized Privilege Use.
From a technical perspective, the exploitation of this flaw likely involves manipulating HTTP requests to bypass authentication gates or exploiting logic flaws that allow privilege escalation without valid credentials. In many similar enterprise applications, attackers may utilize techniques such as session fixation, token forgery, or parameter tampering to assume the identity of an administrator or other privileged user. Once authenticated, the attacker gains full control over the log management system, which provides them with visibility into all ingested logs and potentially write access that could be used to alter audit trails. This capability aligns closely with MITRE ATT&CK techniques related to Initial Access via Valid Accounts (T1078) and Defense Evasion through Log Manipulation or Deletion (T1070). The ability to modify or delete logs is particularly dangerous as it allows an adversary to cover their tracks, thereby hindering incident response efforts and forensic investigations.
The operational impact of this vulnerability extends beyond simple unauthorized access; it poses a severe risk to organizational compliance and security posture. Since Log360 and EventLog Analyzer often contain sensitive information regarding network topology, user activities, application errors, and potential security incidents, an attacker with administrative access can exfiltrate this data for espionage or use it as intelligence for further attacks against the internal network. Furthermore, if the underlying operating system of the server hosting these applications is compromised through additional exploitation paths enabled by the initial breach, the entire infrastructure could be at risk. The lack of proper authentication checks undermines the fundamental principle of least privilege and trust boundaries within the application architecture, potentially leading to complete compromise of the host environment depending on how the service runs and what permissions are assigned to its process account.
Mitigation strategies must prioritize immediate remediation through vendor-provided patches or updates that address the specific code flaws responsible for this authentication bypass. Organizations should verify their current version against Zoho’s official security advisories and apply any available hotfixes promptly. In cases where patching is not immediately feasible, network-level controls such as restricting access to the management interface via IP whitelisting can provide a temporary layer of defense. Additionally, implementing multi-factor authentication for administrative accounts adds an extra barrier that may mitigate exploitation even if credential-based bypass techniques are attempted. Continuous monitoring of application logs and system integrity should be enhanced to detect any anomalous login attempts or privilege changes indicative of this vulnerability being exploited in the wild. Regular security assessments and penetration testing can also help identify similar weaknesses before they are leveraged by malicious actors, ensuring a more resilient defense posture for critical log management infrastructure.