CVE-2021-20080Public exploitNetwork attack vector

Stored XSS via unvalidated asset IP address

Published Apr 9, 2021 · Updated Aug 3, 2024

Stored XSS in ManageEngine ServiceDesk Plus before 11200 and AssetExplorer before 6800 allows remote attackers to inject JavaScript via XML. Asset discovery accepts an unvalidated ifconfig IP-address value and embeds it in the clickToExpandIP() JavaScript function on the asset detail page. No authentication is required to upload the XML, but an administrator must view the created asset before the script executes with that user's application privileges.

CVSS severity6.1
Medium
EPSS probability93.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in ManageEngine ServiceDesk Plus before 11200 and AssetExplorer before 6800 allows remote attackers to inject JavaScript via XML. Asset discovery accepts an unvalidated ifconfig IP-address value and embeds it in the clickToExpandIP() JavaScript function on the asset detail page. No authentication is required to upload the XML, but an administrator must view the created asset before the script executes with that user's application privileges.

The record

CVE
CVE-2021-20080
Published
Apr 9, 2021
Updated
Aug 3, 2024
Vendor
ManageEngine
Product
AssetExplorer
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Before 6800

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ManageEngine · AssetExplorerversion=Before 6800
ManageEngine · ServiceDesk Plusversion=Before 11200

Published CVSS scores

6.1TenableCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo