CVE-2020-23564

Name: CVE-2020-23564
Creator: NVD / NIST
Published: 2023-08-05T02:15:09.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 0.84%

Last modified Jun 17, 2026

CVE-2020-23564 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

0.84%

53.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Sem-Cms	Semcms	3.9

References

https://github.com/a1ertx55/cmstest/blob/main/semcms.mdExploit, Third Party Advisory
https://github.com/a1ertx55/cmstest/blob/master/semcms.mdExploit, Third Party Advisory
https://github.com/a1ertx55/cmstest/blob/main/semcms.mdExploit, Third Party Advisory
https://github.com/a1ertx55/cmstest/blob/master/semcms.mdExploit, Third Party Advisory

Timeline

Published: Aug 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23564?

File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.

How severe is CVE-2020-23564?

CVE-2020-23564 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23564?

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-2020-23564?

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

Scan your code now

Source: NVD / NIST