CVE-2021-20070Public exploitNetwork attack vector

Authenticated stored XSS via install_url

Published Feb 16, 2021 · Updated Aug 3, 2024

Cross-site scripting in RACOM M!DGE Firmware 4.4.40.105 allows remote authenticated users to inject script through virtualization.php. The virtualization.php handler stores the unsanitized install_url parameter and renders it when a virtual-machine configuration page is opened. An authenticated administrator must submit the value, and a user who later loads the configuration page executes the script with that browser session's context, affecting confidentiality and integrity without a reported service outage.

CVSS severity4.8
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in RACOM M!DGE Firmware 4.4.40.105 allows remote authenticated users to inject script through virtualization.php. The virtualization.php handler stores the unsanitized install_url parameter and renders it when a virtual-machine configuration page is opened. An authenticated administrator must submit the value, and a user who later loads the configuration page executes the script with that browser session's context, affecting confidentiality and integrity without a reported service outage.

The record

CVE
CVE-2021-20070
Published
Feb 16, 2021
Updated
Aug 3, 2024
Vendor
RACOM s.r.o.
Product
M!DGE Firmware
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 16, 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?

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

  1. Affected versionversion=MIDGE Firmware 4.4.40.105

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RACOM s.r.o. · M!DGE Firmwareversion=MIDGE Firmware 4.4.40.105

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NVDAV:N/AC:M/Au:S/C:N/I:P/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')
T1189Drive-by Compromise

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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