CVE-2021-20071Public exploitNetwork attack vector

Stored script execution via unsanitized SMS number

Published Feb 16, 2021 · Updated Aug 3, 2024

Stored XSS in RACOM M!DGE Firmware 4.4.40.105 allows remote authenticated users to execute script via the SMS settings page. The sms.php handler stores the user-supplied number parameter without sanitization and renders it when SMS configuration is opened. Administrative access is required to plant the payload, and another user's browser must open the affected page; script runs in that browser's context.

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

Stored XSS in RACOM M!DGE Firmware 4.4.40.105 allows remote authenticated users to execute script via the SMS settings page. The sms.php handler stores the user-supplied number parameter without sanitization and renders it when SMS configuration is opened. Administrative access is required to plant the payload, and another user's browser must open the affected page; script runs in that browser's context.

The record

CVE
CVE-2021-20071
Published
Feb 16, 2021
Updated
Aug 3, 2024
Vendor
RACOM s.r.o.
Product
M!DGE Firmware
Classifications
CWE-79
Attack vector
network
Privileges
admin

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 privilegesadmin

What is affected?

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

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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