CVE-2021-20073Public exploitNetwork attack vector

SMS transmission via tokenless state-changing requests

Published Feb 16, 2021 · Updated Aug 3, 2024

Cross-site request forgery in RACOM M!DGE2 firmware 4.4.40.105 allows remote attackers to send SMS messages through an authenticated browser. The /admin/sms.php handler accepts state-changing POST requests without a CSRF token and acts on the victim's session cookie. Exploitation requires an authenticated router administrator to submit an attacker-controlled form; the demonstrated consequence is transmission of an attacker-chosen SMS message.

CVSS severity8.8
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in RACOM M!DGE2 firmware 4.4.40.105 allows remote attackers to send SMS messages through an authenticated browser. The /admin/sms.php handler accepts state-changing POST requests without a CSRF token and acts on the victim's session cookie. Exploitation requires an authenticated router administrator to submit an attacker-controlled form; the demonstrated consequence is transmission of an attacker-chosen SMS message.

The record

CVE
CVE-2021-20073
Published
Feb 16, 2021
Updated
Aug 3, 2024
Vendor
RACOM s.r.o.
Product
M!DGE2
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

RACOM s.r.o. · M!DGE2version=MIDGE Firmware 4.4.40.105

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

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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