Vulnerability Database

325,773

Total vulnerabilities in the database

CVE-2018-20339

Zoho ManageEngine OpManager 12.3 before build 123239 allows XSS in the Notes column of the Alarms section.

  • Published: Dec 21, 2018
  • Updated: Nov 9, 2025
  • CVE: CVE-2018-20339
  • Severity: Low
  • Exploit:

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
Software From Fixed in
zohocorp / manageengine_opmanager 12.3-build123001 12.3-build123001.x
zohocorp / manageengine_opmanager 12.3-build12300 12.3-build12300.x
zohocorp / manageengine_opmanager 12.3-build123003 12.3-build123003.x
zohocorp / manageengine_opmanager 12.3-build123002 12.3-build123002.x
zohocorp / manageengine_opmanager 12.3-build123009 12.3-build123009.x
zohocorp / manageengine_opmanager 12.3-build123008 12.3-build123008.x
zohocorp / manageengine_opmanager 12.3-build123011 12.3-build123011.x
zohocorp / manageengine_opmanager 12.3-build123010 12.3-build123010.x
zohocorp / manageengine_opmanager 12.3-build123005 12.3-build123005.x
zohocorp / manageengine_opmanager 12.3-build123004 12.3-build123004.x
zohocorp / manageengine_opmanager 12.3-build123007 12.3-build123007.x
zohocorp / manageengine_opmanager 12.3-build123006 12.3-build123006.x
zohocorp / manageengine_opmanager 12.3-build123022 12.3-build123022.x
zohocorp / manageengine_opmanager 12.3-build123021 12.3-build123021.x
zohocorp / manageengine_opmanager 12.3-build123024 12.3-build123024.x
zohocorp / manageengine_opmanager 12.3-build123023 12.3-build123023.x
zohocorp / manageengine_opmanager 12.3-build123013 12.3-build123013.x
zohocorp / manageengine_opmanager 12.3-build123012 12.3-build123012.x
zohocorp / manageengine_opmanager 12.3-build123015 12.3-build123015.x
zohocorp / manageengine_opmanager 12.3-build123014 12.3-build123014.x
zohocorp / manageengine_opmanager 12.3-build123030 12.3-build123030.x
zohocorp / manageengine_opmanager 12.3-build123029 12.3-build123029.x
zohocorp / manageengine_opmanager 12.3-build123026 12.3-build123026.x
zohocorp / manageengine_opmanager 12.3-build123025 12.3-build123025.x
zohocorp / manageengine_opmanager 12.3-build123028 12.3-build123028.x
zohocorp / manageengine_opmanager 12.3-build123027 12.3-build123027.x
zohocorp / manageengine_opmanager 12.3-build123043 12.3-build123043.x
zohocorp / manageengine_opmanager 12.3-build123037 12.3-build123037.x
zohocorp / manageengine_opmanager 12.3-build123045 12.3-build123045.x
zohocorp / manageengine_opmanager 12.3-build123044 12.3-build123044.x
zohocorp / manageengine_opmanager 12.3-build123034 12.3-build123034.x
zohocorp / manageengine_opmanager 12.3-build123033 12.3-build123033.x
zohocorp / manageengine_opmanager 12.3-build123036 12.3-build123036.x
zohocorp / manageengine_opmanager 12.3-build123035 12.3-build123035.x
zohocorp / manageengine_opmanager 12.3-build123050 12.3-build123050.x
zohocorp / manageengine_opmanager 12.3-build123047 12.3-build123047.x
zohocorp / manageengine_opmanager 12.3-build123046 12.3-build123046.x
zohocorp / manageengine_opmanager 12.3-build123049 12.3-build123049.x
zohocorp / manageengine_opmanager 12.3-build123048 12.3-build123048.x
zohocorp / manageengine_opmanager 12.3-build123032 12.3-build123032.x
zohocorp / manageengine_opmanager 12.3-build123031 12.3-build123031.x
zohocorp / manageengine_opmanager 12.3-build123076 12.3-build123076.x
zohocorp / manageengine_opmanager 12.3-build123078 12.3-build123078.x
zohocorp / manageengine_opmanager 12.3-build123077 12.3-build123077.x
zohocorp / manageengine_opmanager 12.3-build123084 12.3-build123084.x
zohocorp / manageengine_opmanager 12.3-build123083 12.3-build123083.x
zohocorp / manageengine_opmanager 12.3-build123090 12.3-build123090.x
zohocorp / manageengine_opmanager 12.3-build123086 12.3-build123086.x
zohocorp / manageengine_opmanager 12.3-build123080 12.3-build123080.x
zohocorp / manageengine_opmanager 12.3-build123079 12.3-build123079.x
zohocorp / manageengine_opmanager 12.3-build123082 12.3-build123082.x
zohocorp / manageengine_opmanager 12.3-build123081 12.3-build123081.x
zohocorp / manageengine_opmanager 12.3-build123051 12.3-build123051.x
zohocorp / manageengine_opmanager 12.3-build123053 12.3-build123053.x
zohocorp / manageengine_opmanager 12.3-build123052 12.3-build123052.x
zohocorp / manageengine_opmanager 12.3-build123055 12.3-build123055.x
zohocorp / manageengine_opmanager 12.3-build123054 12.3-build123054.x
zohocorp / manageengine_opmanager 12.3-build123057 12.3-build123057.x
zohocorp / manageengine_opmanager 12.3-build123056 12.3-build123056.x
zohocorp / manageengine_opmanager 12.3-build123063 12.3-build123063.x
zohocorp / manageengine_opmanager 12.3-build123062 12.3-build123062.x
zohocorp / manageengine_opmanager 12.3-build123065 12.3-build123065.x
zohocorp / manageengine_opmanager 12.3-build123064 12.3-build123064.x
zohocorp / manageengine_opmanager 12.3-build123070 12.3-build123070.x
zohocorp / manageengine_opmanager 12.3-build123067 12.3-build123067.x
zohocorp / manageengine_opmanager 12.3-build123066 12.3-build123066.x
zohocorp / manageengine_opmanager 12.3-build123069 12.3-build123069.x
zohocorp / manageengine_opmanager 12.3-build123068 12.3-build123068.x
zohocorp / manageengine_opmanager 12.3-build123092 12.3-build123092.x
zohocorp / manageengine_opmanager 12.3-build123091 12.3-build123091.x
zohocorp / manageengine_opmanager 12.3-build123093 12.3-build123093.x
zohocorp / manageengine_opmanager 12.3-build123106 12.3-build123106.x
zohocorp / manageengine_opmanager 12.3-build123105 12.3-build123105.x
zohocorp / manageengine_opmanager 12.3-build123108 12.3-build123108.x
zohocorp / manageengine_opmanager 12.3-build123107 12.3-build123107.x
zohocorp / manageengine_opmanager 12.3-build123104 12.3-build123104.x
zohocorp / manageengine_opmanager 12.3-build123114 12.3-build123114.x
zohocorp / manageengine_opmanager 12.3-build123113 12.3-build123113.x
zohocorp / manageengine_opmanager 12.3-build123116 12.3-build123116.x
zohocorp / manageengine_opmanager 12.3-build123115 12.3-build123115.x
zohocorp / manageengine_opmanager 12.3-build123110 12.3-build123110.x
zohocorp / manageengine_opmanager 12.3-build123109 12.3-build123109.x
zohocorp / manageengine_opmanager 12.3-build123112 12.3-build123112.x
zohocorp / manageengine_opmanager 12.3-build123111 12.3-build123111.x
zohocorp / manageengine_opmanager 12.3-build123118 12.3-build123118.x
zohocorp / manageengine_opmanager 12.3-build123117 12.3-build123117.x
zohocorp / manageengine_opmanager 12.3-build123119 12.3-build123119.x
zohocorp / manageengine_opmanager 12.3-build123126 12.3-build123126.x
zohocorp / manageengine_opmanager 12.3-build123125 12.3-build123125.x
zohocorp / manageengine_opmanager 12.3-build123127 12.3-build123127.x
zohocorp / manageengine_opmanager 12.3-build123122 12.3-build123122.x
zohocorp / manageengine_opmanager 12.3-build123121 12.3-build123121.x
zohocorp / manageengine_opmanager 12.3-build123124 12.3-build123124.x
zohocorp / manageengine_opmanager 12.3-build123123 12.3-build123123.x
zohocorp / manageengine_opmanager 12.3-build123120 12.3-build123120.x
zohocorp / manageengine_opmanager 12.3-build123147 12.3-build123147.x
zohocorp / manageengine_opmanager 12.3-build123137 12.3-build123137.x
zohocorp / manageengine_opmanager 12.3-build123149 12.3-build123149.x
zohocorp / manageengine_opmanager 12.3-build123148 12.3-build123148.x
zohocorp / manageengine_opmanager 12.3-build123136 12.3-build123136.x
zohocorp / manageengine_opmanager 12.3-build123159 12.3-build123159.x
zohocorp / manageengine_opmanager 12.3-build123156 12.3-build123156.x
zohocorp / manageengine_opmanager 12.3-build123150 12.3-build123150.x
zohocorp / manageengine_opmanager 12.3-build123158 12.3-build123158.x
zohocorp / manageengine_opmanager 12.3-build123157 12.3-build123157.x
zohocorp / manageengine_opmanager 12.3-build123160 12.3-build123160.x
zohocorp / manageengine_opmanager 12.3-build123162 12.3-build123162.x
zohocorp / manageengine_opmanager 12.3-build123161 12.3-build123161.x
zohocorp / manageengine_opmanager 12.3-build123168 12.3-build123168.x
zohocorp / manageengine_opmanager 12.3-build123167 12.3-build123167.x
zohocorp / manageengine_opmanager 12.3-build123169 12.3-build123169.x
zohocorp / manageengine_opmanager 12.3-build123164 12.3-build123164.x
zohocorp / manageengine_opmanager 12.3-build123163 12.3-build123163.x
zohocorp / manageengine_opmanager 12.3-build123166 12.3-build123166.x
zohocorp / manageengine_opmanager 12.3-build123165 12.3-build123165.x
zohocorp / manageengine_opmanager 12.3-build123175 12.3-build123175.x
zohocorp / manageengine_opmanager 12.3-build123181 12.3-build123181.x
zohocorp / manageengine_opmanager 12.3-build123180 12.3-build123180.x
zohocorp / manageengine_opmanager 12.3-build123183 12.3-build123183.x
zohocorp / manageengine_opmanager 12.3-build123182 12.3-build123182.x
zohocorp / manageengine_opmanager 12.3-build123177 12.3-build123177.x
zohocorp / manageengine_opmanager 12.3-build123176 12.3-build123176.x
zohocorp / manageengine_opmanager 12.3-build123179 12.3-build123179.x
zohocorp / manageengine_opmanager 12.3-build123178 12.3-build123178.x
zohocorp / manageengine_opmanager 12.3-build123189 12.3-build123189.x
zohocorp / manageengine_opmanager 12.3-build123188 12.3-build123188.x
zohocorp / manageengine_opmanager 12.3-build123185 12.3-build123185.x
zohocorp / manageengine_opmanager 12.3-build123184 12.3-build123184.x
zohocorp / manageengine_opmanager 12.3-build123187 12.3-build123187.x
zohocorp / manageengine_opmanager 12.3-build123186 12.3-build123186.x
zohocorp / manageengine_opmanager 12.3-build123191 12.3-build123191.x
zohocorp / manageengine_opmanager 12.3-build123190 12.3-build123190.x
zohocorp / manageengine_opmanager 12.3-build123197 12.3-build123197.x
zohocorp / manageengine_opmanager 12.3-build123196 12.3-build123196.x
zohocorp / manageengine_opmanager 12.3-build123198 12.3-build123198.x
zohocorp / manageengine_opmanager 12.3-build123193 12.3-build123193.x
zohocorp / manageengine_opmanager 12.3-build123192 12.3-build123192.x
zohocorp / manageengine_opmanager 12.3-build123195 12.3-build123195.x
zohocorp / manageengine_opmanager 12.3-build123194 12.3-build123194.x
zohocorp / manageengine_opmanager 12.3-build123204 12.3-build123204.x
zohocorp / manageengine_opmanager 12.3-build123206 12.3-build123206.x
zohocorp / manageengine_opmanager 12.3-build123205 12.3-build123205.x
zohocorp / manageengine_opmanager 12.3-build123208 12.3-build123208.x
zohocorp / manageengine_opmanager 12.3-build123207 12.3-build123207.x
zohocorp / manageengine_opmanager 12.3-build123229 12.3-build123229.x
zohocorp / manageengine_opmanager 12.3-build123230 12.3-build123230.x
zohocorp / manageengine_opmanager 12.3-build123223 12.3-build123223.x
zohocorp / manageengine_opmanager 12.3-build123224 12.3-build123224.x
zohocorp / manageengine_opmanager 12.3-build123222 12.3-build123222.x
zohocorp / manageengine_opmanager 12.3-build123237 12.3-build123237.x
zohocorp / manageengine_opmanager 12.3-build123231 12.3-build123231.x
zohocorp / manageengine_opmanager 12.3-build123238 12.3-build123238.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.