CVE-2020-22120Network attack vector

Authenticated code execution via exdiy payload

Published Aug 18, 2021 · Updated Aug 4, 2024

Code injection in imcat v5.1 allows remote authenticated users to execute arbitrary code through the /root/run/adm.php exdiy endpoint. The backstage exdiy editor saves attacker-controlled content that is later interpreted when the resulting file is accessed, rather than being treated as inert data. The endpoint requires a logged-in backstage account, and successful exploitation can compromise the server with arbitrary code execution.

CVSS severity8.8
High
EPSS probability2.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in imcat v5.1 allows remote authenticated users to execute arbitrary code through the /root/run/adm.php exdiy endpoint. The backstage exdiy editor saves attacker-controlled content that is later interpreted when the resulting file is accessed, rather than being treated as inert data. The endpoint requires a logged-in backstage account, and successful exploitation can compromise the server with arbitrary code execution.

The record

CVE
CVE-2020-22120
Published
Aug 18, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2021CVE 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

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code
T1190Exploit Public-Facing Application

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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