CVE-2021-28047Network attack vector

Authenticated script execution via unneutralized report fields

Published Apr 1, 2021 · Updated Aug 3, 2024

Stored XSS in administration reports in Devolutions Remote Desktop Manager 2020.3 and earlier allows remote authenticated users to inject script. Some form fields accept malicious JavaScript without neutralizing it before their values are rendered into administration reports. An authenticated user must submit a crafted field and another user must view the resulting report, enabling script execution in that viewer's application context.

CVSS severityUnavailable
Unscored
EPSS probability1.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in administration reports in Devolutions Remote Desktop Manager 2020.3 and earlier allows remote authenticated users to inject script. Some form fields accept malicious JavaScript without neutralizing it before their values are rendered into administration reports. An authenticated user must submit a crafted field and another user must view the resulting report, enabling script execution in that viewer's application context.

The record

CVE
CVE-2021-28047
Published
Apr 1, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 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

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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

No CVSS assessment is available in this record.

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 exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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