CVE-2020-21786

Name: CVE-2020-21786
Creator: NVD / NIST
Published: 2021-06-24T16:15:08.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2020-21786 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In IBOS 4.5.4 Open, Arbitrary File Inclusion causes getshell via /system/modules/dashboard/controllers/CronController.php.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

In IBOS 4.5.4 Open, Arbitrary File Inclusion causes getshell via /system/modules/dashboard/controllers/CronController.php.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.12%

62.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Ibos	Ibos	4.5.4

References

https://gitee.com/ibos/IBOS/issues/I18JRGExploit, Issue Tracking, Third Party Advisory
https://gitee.com/ibos/IBOS/issues/I18JRGExploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jun 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21786?

In IBOS 4.5.4 Open, Arbitrary File Inclusion causes getshell via /system/modules/dashboard/controllers/CronController.php.

How severe is CVE-2020-21786?

CVE-2020-21786 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21786?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-21786?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST