Manageengine Log360
CVE-2021-20136
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK
1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could access critical functionality without authentication by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
ManageEngine Log360 Builds < 5235 are affected by an improper access control vulnerability allowing database configuration overwrite. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.
Affects your stack
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Technical ContextAI · show details
This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. ManageEngine Log360 Builds < 5235 are affected by an improper access control vulnerability allowing database configuration overwrite. An unauthenticated remote attacker can send a specially crafted message to Log360 to change its backend database to an attacker-controlled database and to force Log360 to restart. An attacker can leverage this vulnerability to achieve remote code execution by replacing files executed by Log360 on startup. Affected products include: Zohocorp Manageengine Log360.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
ManageEngine Log360 Builds < 5235 are affected by an improper access control vulnerability allowing database configuration overwrite. An unauthenticated remote attacker can send a specially crafted message to Log360 to change its backend database to an attacker-controlled database and to force Log360 to restart. An attacker can leverage this vulnerability to achieve remote code execution by replacing files executed by Log360 on startup.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)NVD
More in Manageengine Log360
View allZoho ManageEngine Log360 before Build 5225 allows remote code execution via BCP file overwrite. Rated critical severity
Zoho ManageEngine Log360 before Build 5219 allows unrestricted file upload with resultant remote code execution. Rated c
An issue was discovered in Zoho ManageEngine Exchange Reporter Plus before build number 5510, AD360 before build number
Zoho ManageEngine Log360 before Build 5224 allows a CSRF attack for disabling the logon security settings. Rated high se
Zoho ManageEngine Log360 before Build 5219 allows a CSRF attack on proxy settings. Rated high severity (CVSS 8.8), this
Authentication bypass in Zohocorp ManageEngine Log360 (builds 13000 through 13013) lets remote unauthenticated attackers
Zoho ManageEngine Active Directory 360 versions 4315 and below, ADAudit Plus 7202 and below, ADManager Plus 7200 and bel
Zoho ManageEngine Log360 before Build 5224 allows stored XSS via the LOGO_PATH key value in the logon settings. Rated me
Zoho ManageEngine Log360 before Build 5225 allows stored XSS. Rated medium severity (CVSS 6.1), this vulnerability is re
Malformed syslog packets can crash the log collector in ManageEngine EventLog Analyzer and Log360 builds prior to 13071,
GitHub PoC
Exploit-DB