CVE-2020-11556Public exploitNetwork attack vector

Browser script execution via unsanitized shortcut titles

Published Apr 9, 2020 · Updated Aug 4, 2024

Stored and reflected XSS in Castle Rock SNMPc Online 12.10.10 allows remote authenticated users to execute browser script. The shortcut-creation form stores an unsanitized title and renders it into pages without neutralizing HTML or SVG event-handler markup. A logged-in user must submit the payload, and a different user's browser must render an affected view; the demonstrated consequence is script execution in that web-session context.

CVSS severity5.4
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored and reflected XSS in Castle Rock SNMPc Online 12.10.10 allows remote authenticated users to execute browser script. The shortcut-creation form stores an unsanitized title and renders it into pages without neutralizing HTML or SVG event-handler markup. A logged-in user must submit the payload, and a different user's browser must render an affected view; the demonstrated consequence is script execution in that web-session context.

The record

CVE
CVE-2020-11556
Published
Apr 9, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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

Technologies

Your stack

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Your stack

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