Vulnerability Database

383,463

Total vulnerabilities in the database

CVE-2021-20080 — zohocorp / manageengine_servicedesk_plus

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Insufficient output sanitization in ManageEngine ServiceDesk Plus before version 11200 and ManageEngine AssetExplorer before version 6800 allows a remote, unauthenticated attacker to conduct persistent cross-site scripting (XSS) attacks by uploading a crafted XML asset file.

  • Published: Apr 9, 2021
  • Updated: Sep 10, 2026
  • CVE: CVE-2021-20080
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Medium
  • Score: 6.1
  • AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2:

  • Severity: Medium
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
Software Affected versions
zohocorp / manageengine_servicedesk_plus = 8.1
zohocorp / manageengine_servicedesk_plus = 8.2
zohocorp / manageengine_servicedesk_plus = 8.2-8201
zohocorp / manageengine_servicedesk_plus = 8.2-8202
zohocorp / manageengine_servicedesk_plus = 8.2-8203
zohocorp / manageengine_servicedesk_plus = 8.2-8204
zohocorp / manageengine_servicedesk_plus = 8.2-8205
zohocorp / manageengine_servicedesk_plus = 8.2-8206
zohocorp / manageengine_servicedesk_plus = 8.2-8207
zohocorp / manageengine_servicedesk_plus = 8.2-8208
zohocorp / manageengine_servicedesk_plus = 8.2-8209
zohocorp / manageengine_servicedesk_plus = 8.2-8210
zohocorp / manageengine_servicedesk_plus = 8.2-8211
zohocorp / manageengine_servicedesk_plus = 8.2-8212
zohocorp / manageengine_servicedesk_plus = 8.2-8213
zohocorp / manageengine_servicedesk_plus = 8.2-8214
zohocorp / manageengine_servicedesk_plus = 8.2-8215
zohocorp / manageengine_servicedesk_plus = 8.2-8216
zohocorp / manageengine_servicedesk_plus = 8.2-8217
zohocorp / manageengine_servicedesk_plus = 9.0
zohocorp / manageengine_servicedesk_plus = 9.0-9000
zohocorp / manageengine_servicedesk_plus = 9.0-9001
zohocorp / manageengine_servicedesk_plus = 9.0-9002
zohocorp / manageengine_servicedesk_plus = 9.0-9003
zohocorp / manageengine_servicedesk_plus = 9.0-9004
zohocorp / manageengine_servicedesk_plus = 9.0-9005
zohocorp / manageengine_servicedesk_plus = 9.0-9006
zohocorp / manageengine_servicedesk_plus = 9.0-9007
zohocorp / manageengine_servicedesk_plus = 9.0-9008
zohocorp / manageengine_servicedesk_plus = 9.0-9009
zohocorp / manageengine_servicedesk_plus = 9.0-9010
zohocorp / manageengine_servicedesk_plus = 9.0-9011
zohocorp / manageengine_servicedesk_plus = 9.0-9012
zohocorp / manageengine_servicedesk_plus = 9.0-9013
zohocorp / manageengine_servicedesk_plus = 9.0-9014
zohocorp / manageengine_servicedesk_plus = 9.0-9016
zohocorp / manageengine_servicedesk_plus = 9.0-9017
zohocorp / manageengine_servicedesk_plus = 9.0-9018
zohocorp / manageengine_servicedesk_plus = 9.0-9019
zohocorp / manageengine_servicedesk_plus = 9.0-9020
zohocorp / manageengine_servicedesk_plus = 9.0-9021
zohocorp / manageengine_servicedesk_plus = 9.0-9022
zohocorp / manageengine_servicedesk_plus = 9.0-9023
zohocorp / manageengine_servicedesk_plus = 9.0-9024
zohocorp / manageengine_servicedesk_plus = 9.0-9025
zohocorp / manageengine_servicedesk_plus = 9.0-9026
zohocorp / manageengine_servicedesk_plus = 9.0-9027
zohocorp / manageengine_servicedesk_plus = 9.0-9028
zohocorp / manageengine_servicedesk_plus = 9.0-9029
zohocorp / manageengine_servicedesk_plus = 9.0-9030
zohocorp / manageengine_servicedesk_plus = 9.0-9031
zohocorp / manageengine_servicedesk_plus = 9.0-9032
zohocorp / manageengine_servicedesk_plus = 9.0-9033
zohocorp / manageengine_servicedesk_plus = 9.0-9034
zohocorp / manageengine_servicedesk_plus = 9.0-9035
zohocorp / manageengine_servicedesk_plus = 9.0-9036
zohocorp / manageengine_servicedesk_plus = 9.0-9037
zohocorp / manageengine_servicedesk_plus = 9.0-9038
zohocorp / manageengine_servicedesk_plus = 9.0-9039
zohocorp / manageengine_servicedesk_plus = 9.0-9040
zohocorp / manageengine_servicedesk_plus = 9.0-9041
zohocorp / manageengine_servicedesk_plus = 9.0-9042
zohocorp / manageengine_servicedesk_plus = 9.0-9043
zohocorp / manageengine_servicedesk_plus = 9.0-9044
zohocorp / manageengine_servicedesk_plus = 9.0-9045
zohocorp / manageengine_servicedesk_plus = 9.0-9046
zohocorp / manageengine_servicedesk_plus = 9.0-9047
zohocorp / manageengine_servicedesk_plus = 9.0-9048
zohocorp / manageengine_servicedesk_plus = 9.0-9049
zohocorp / manageengine_servicedesk_plus = 9.1
zohocorp / manageengine_servicedesk_plus = 9.1-9100
zohocorp / manageengine_servicedesk_plus = 9.1-9101
zohocorp / manageengine_servicedesk_plus = 9.1-9102
zohocorp / manageengine_servicedesk_plus = 9.1-9103
zohocorp / manageengine_servicedesk_plus = 9.1-9104
zohocorp / manageengine_servicedesk_plus = 9.1-9105
zohocorp / manageengine_servicedesk_plus = 9.1-9106
zohocorp / manageengine_servicedesk_plus = 9.1-9107
zohocorp / manageengine_servicedesk_plus = 9.1-9108
zohocorp / manageengine_servicedesk_plus = 9.1-9109
zohocorp / manageengine_servicedesk_plus = 9.1-9110
zohocorp / manageengine_servicedesk_plus = 9.1-9111
zohocorp / manageengine_servicedesk_plus = 9.1-9112
zohocorp / manageengine_servicedesk_plus = 9.1-9113
zohocorp / manageengine_servicedesk_plus = 9.1-9114
zohocorp / manageengine_servicedesk_plus = 9.1-9115
zohocorp / manageengine_servicedesk_plus = 9.1-9116
zohocorp / manageengine_servicedesk_plus = 9.1-9117
zohocorp / manageengine_servicedesk_plus = 9.1-9118
zohocorp / manageengine_servicedesk_plus = 9.1-9119
zohocorp / manageengine_servicedesk_plus = 9.1-9120
zohocorp / manageengine_servicedesk_plus = 9.1-9121
zohocorp / manageengine_servicedesk_plus = 9.2
zohocorp / manageengine_servicedesk_plus = 9.2-9200
zohocorp / manageengine_servicedesk_plus = 9.2-9201
zohocorp / manageengine_servicedesk_plus = 9.2-9202
zohocorp / manageengine_servicedesk_plus = 9.2-9203
zohocorp / manageengine_servicedesk_plus = 9.2-9204
zohocorp / manageengine_servicedesk_plus = 9.2-9205
zohocorp / manageengine_servicedesk_plus = 9.2-9206
zohocorp / manageengine_servicedesk_plus = 9.2-9207
zohocorp / manageengine_servicedesk_plus = 9.2-9208
zohocorp / manageengine_servicedesk_plus = 9.2-9209
zohocorp / manageengine_servicedesk_plus = 9.2-9210
zohocorp / manageengine_servicedesk_plus = 9.2-9211
zohocorp / manageengine_servicedesk_plus = 9.2-9212
zohocorp / manageengine_servicedesk_plus = 9.2-9213
zohocorp / manageengine_servicedesk_plus = 9.2-9214
zohocorp / manageengine_servicedesk_plus = 9.2-9215
zohocorp / manageengine_servicedesk_plus = 9.2-9216
zohocorp / manageengine_servicedesk_plus = 9.2-9217
zohocorp / manageengine_servicedesk_plus = 9.2-9218
zohocorp / manageengine_servicedesk_plus = 9.2-9219
zohocorp / manageengine_servicedesk_plus = 9.2-9220
zohocorp / manageengine_servicedesk_plus = 9.2-9221
zohocorp / manageengine_servicedesk_plus = 9.2-9222
zohocorp / manageengine_servicedesk_plus = 9.2-9223
zohocorp / manageengine_servicedesk_plus = 9.2-9224
zohocorp / manageengine_servicedesk_plus = 9.2-9225
zohocorp / manageengine_servicedesk_plus = 9.2-9226
zohocorp / manageengine_servicedesk_plus = 9.2-9227
zohocorp / manageengine_servicedesk_plus = 9.2-9228
zohocorp / manageengine_servicedesk_plus = 9.2-9229
zohocorp / manageengine_servicedesk_plus = 9.2-9230
zohocorp / manageengine_servicedesk_plus = 9.2-9231
zohocorp / manageengine_servicedesk_plus = 9.2-9232
zohocorp / manageengine_servicedesk_plus = 9.2-9233
zohocorp / manageengine_servicedesk_plus = 9.2-9234
zohocorp / manageengine_servicedesk_plus = 9.2-9235
zohocorp / manageengine_servicedesk_plus = 9.2-9236
zohocorp / manageengine_servicedesk_plus = 9.2-9237
zohocorp / manageengine_servicedesk_plus = 9.2-9238
zohocorp / manageengine_servicedesk_plus = 9.2-9239
zohocorp / manageengine_servicedesk_plus = 9.2-9240
zohocorp / manageengine_servicedesk_plus = 9.2-9241
zohocorp / manageengine_servicedesk_plus = 9.2-9242
zohocorp / manageengine_servicedesk_plus = 9.3
zohocorp / manageengine_servicedesk_plus = 9.3-9300
zohocorp / manageengine_servicedesk_plus = 9.3-9301
zohocorp / manageengine_servicedesk_plus = 9.3-9302
zohocorp / manageengine_servicedesk_plus = 9.3-9303
zohocorp / manageengine_servicedesk_plus = 9.3-9304
zohocorp / manageengine_servicedesk_plus = 9.3-9305
zohocorp / manageengine_servicedesk_plus = 9.3-9306
zohocorp / manageengine_servicedesk_plus = 9.3-9307
zohocorp / manageengine_servicedesk_plus = 9.3-9308
zohocorp / manageengine_servicedesk_plus = 9.3-9309
zohocorp / manageengine_servicedesk_plus = 9.3-9310
zohocorp / manageengine_servicedesk_plus = 9.3-9311
zohocorp / manageengine_servicedesk_plus = 9.3-9312
zohocorp / manageengine_servicedesk_plus = 9.3-9313
zohocorp / manageengine_servicedesk_plus = 9.3-9314
zohocorp / manageengine_servicedesk_plus = 9.3-9315
zohocorp / manageengine_servicedesk_plus = 9.3-9316
zohocorp / manageengine_servicedesk_plus = 9.3-9317
zohocorp / manageengine_servicedesk_plus = 9.3-9318
zohocorp / manageengine_servicedesk_plus = 9.3-9319
zohocorp / manageengine_servicedesk_plus = 9.3-9320
zohocorp / manageengine_servicedesk_plus = 9.3-9321
zohocorp / manageengine_servicedesk_plus = 9.3-9322
zohocorp / manageengine_servicedesk_plus = 9.3-9323
zohocorp / manageengine_servicedesk_plus = 9.3-9324
zohocorp / manageengine_servicedesk_plus = 9.3-9325
zohocorp / manageengine_servicedesk_plus = 9.3-9326
zohocorp / manageengine_servicedesk_plus = 9.3-9327
zohocorp / manageengine_servicedesk_plus = 9.3-9328
zohocorp / manageengine_servicedesk_plus = 9.3-9329
zohocorp / manageengine_servicedesk_plus = 9.3-9330
zohocorp / manageengine_servicedesk_plus = 9.3-9331
zohocorp / manageengine_servicedesk_plus = 9.3-9332
zohocorp / manageengine_servicedesk_plus = 9.3-9333
zohocorp / manageengine_servicedesk_plus = 9.3-9334
zohocorp / manageengine_servicedesk_plus = 9.3-9335
zohocorp / manageengine_servicedesk_plus = 9.3-9336
zohocorp / manageengine_servicedesk_plus = 9.4
zohocorp / manageengine_servicedesk_plus = 9.4-9400
zohocorp / manageengine_servicedesk_plus = 9.4-9401
zohocorp / manageengine_servicedesk_plus = 9.4-9402
zohocorp / manageengine_servicedesk_plus = 9.4-9403
zohocorp / manageengine_servicedesk_plus = 9.4-9404
zohocorp / manageengine_servicedesk_plus = 9.4-9405
zohocorp / manageengine_servicedesk_plus = 9.4-9406
zohocorp / manageengine_servicedesk_plus = 9.4-9407
zohocorp / manageengine_servicedesk_plus = 9.4-9408
zohocorp / manageengine_servicedesk_plus = 9.4-9409
zohocorp / manageengine_servicedesk_plus = 9.4-9410
zohocorp / manageengine_servicedesk_plus = 9.4-9411
zohocorp / manageengine_servicedesk_plus = 9.4-9412
zohocorp / manageengine_servicedesk_plus = 9.4-9413
zohocorp / manageengine_servicedesk_plus = 9.4-9414
zohocorp / manageengine_servicedesk_plus = 9.4-9415
zohocorp / manageengine_servicedesk_plus = 9.4-9416
zohocorp / manageengine_servicedesk_plus = 9.4-9417
zohocorp / manageengine_servicedesk_plus = 9.4-9418
zohocorp / manageengine_servicedesk_plus = 9.4-9419
zohocorp / manageengine_servicedesk_plus = 9.4-9420
zohocorp / manageengine_servicedesk_plus = 9.4-9421
zohocorp / manageengine_servicedesk_plus = 9.4-9422
zohocorp / manageengine_servicedesk_plus = 9.4-9423
zohocorp / manageengine_servicedesk_plus = 9.4-9424
zohocorp / manageengine_servicedesk_plus = 9.4-9425
zohocorp / manageengine_servicedesk_plus = 9.4-9426
zohocorp / manageengine_servicedesk_plus = 9.4-9427
zohocorp / manageengine_servicedesk_plus = 10.0
zohocorp / manageengine_servicedesk_plus = 10.0.0
zohocorp / manageengine_servicedesk_plus = 10.0.0-10000
zohocorp / manageengine_servicedesk_plus = 10.0.0-10001
zohocorp / manageengine_servicedesk_plus = 10.0.0-10002
zohocorp / manageengine_servicedesk_plus = 10.0.0-10003
zohocorp / manageengine_servicedesk_plus = 10.0.0-10004
zohocorp / manageengine_servicedesk_plus = 10.0.0-10005
zohocorp / manageengine_servicedesk_plus = 10.0.0-10006
zohocorp / manageengine_servicedesk_plus = 10.0.0-10007
zohocorp / manageengine_servicedesk_plus = 10.0.0-10008
zohocorp / manageengine_servicedesk_plus = 10.0.0-10009
zohocorp / manageengine_servicedesk_plus = 10.0.0-10010
zohocorp / manageengine_servicedesk_plus = 10.0.0-10011
zohocorp / manageengine_servicedesk_plus = 10.0.0-10012
zohocorp / manageengine_servicedesk_plus = 10.0.0-10013
zohocorp / manageengine_servicedesk_plus = 10.0.0-10014
zohocorp / manageengine_servicedesk_plus = 10.0.0-10015
zohocorp / manageengine_servicedesk_plus = 10.0.0-10016
zohocorp / manageengine_servicedesk_plus = 10.0.0-10017
zohocorp / manageengine_servicedesk_plus = 10.0.0-10018
zohocorp / manageengine_servicedesk_plus = 10.0.0-10019
zohocorp / manageengine_servicedesk_plus = 10.0.0-10020
zohocorp / manageengine_servicedesk_plus = 10.0.0-10021
zohocorp / manageengine_servicedesk_plus = 10.5
zohocorp / manageengine_servicedesk_plus = 10.5-10500
zohocorp / manageengine_servicedesk_plus = 10.5-10501
zohocorp / manageengine_servicedesk_plus = 10.5-10502
zohocorp / manageengine_servicedesk_plus = 10.5-10503
zohocorp / manageengine_servicedesk_plus = 10.5-10504
zohocorp / manageengine_servicedesk_plus = 10.5-10505
zohocorp / manageengine_servicedesk_plus = 10.5-10506
zohocorp / manageengine_servicedesk_plus = 10.5-10507
zohocorp / manageengine_servicedesk_plus = 10.5-10508
zohocorp / manageengine_servicedesk_plus = 10.5-10509
zohocorp / manageengine_servicedesk_plus = 10.5-10510
zohocorp / manageengine_servicedesk_plus = 10.5-10511
zohocorp / manageengine_servicedesk_plus = 10.5-10512
zohocorp / manageengine_servicedesk_plus = 10.5-10513
zohocorp / manageengine_servicedesk_plus = 10.5-10514
zohocorp / manageengine_servicedesk_plus = 11.0
zohocorp / manageengine_servicedesk_plus = 11.0-11000
zohocorp / manageengine_servicedesk_plus = 11.0-11001
zohocorp / manageengine_servicedesk_plus = 11.0-11002
zohocorp / manageengine_servicedesk_plus = 11.0-11003
zohocorp / manageengine_servicedesk_plus = 11.0-11004
zohocorp / manageengine_servicedesk_plus = 11.0-11005
zohocorp / manageengine_servicedesk_plus = 11.0-11006
zohocorp / manageengine_servicedesk_plus = 11.0-11007
zohocorp / manageengine_servicedesk_plus = 11.0-11008
zohocorp / manageengine_servicedesk_plus = 11.0-11009
zohocorp / manageengine_servicedesk_plus = 11.0-11010
zohocorp / manageengine_servicedesk_plus = 11.1
zohocorp / manageengine_servicedesk_plus = 11.1-11100
zohocorp / manageengine_servicedesk_plus = 11.1-11101
zohocorp / manageengine_servicedesk_plus = 11.1-11102
zohocorp / manageengine_servicedesk_plus = 11.1-11103
zohocorp / manageengine_servicedesk_plus = 11.1-11104
zohocorp / manageengine_servicedesk_plus = 11.1-11105
zohocorp / manageengine_servicedesk_plus = 11.1-11106
zohocorp / manageengine_servicedesk_plus = 11.1-11107
zohocorp / manageengine_servicedesk_plus = 11.1-11108
zohocorp / manageengine_servicedesk_plus = 11.1-11109
zohocorp / manageengine_servicedesk_plus = 11.1-11110
zohocorp / manageengine_servicedesk_plus = 11.1-11111
zohocorp / manageengine_servicedesk_plus = 11.1-11112
zohocorp / manageengine_servicedesk_plus = 11.1-11113
zohocorp / manageengine_servicedesk_plus = 11.1-11114
zohocorp / manageengine_servicedesk_plus = 11.1-11115
zohocorp / manageengine_servicedesk_plus = 11.1-11116
zohocorp / manageengine_servicedesk_plus = 11.1-11117
zohocorp / manageengine_servicedesk_plus = 11.1-build11118
zohocorp / manageengine_servicedesk_plus = 11.1-build11119

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.