CVE-2020-7521

Name: CVE-2020-7521
Creator: NVD / NIST
Published: 2020-08-31T17:15:12.233+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.66%

Last modified Jun 17, 2026

CVE-2020-7521 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earlier) when accessing a vulnerable method of `FileUploadServlet` which may lead to uploading executable files to non-specified directories.. EPSS estimates a 1.66% chance of exploitation in the next 30 days.

Description

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earlier) when accessing a vulnerable method of `FileUploadServlet` which may lead to uploading executable files to non-specified directories.

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

1.66%

73.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Schneider-Electric	Apc Easy Ups Online Software	<= 2.0

References

https://www.se.com/ww/en/download/document/SEVD-2020-224-04/Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-224-04/Vendor Advisory

Timeline

Published: Aug 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7521?

How severe is CVE-2020-7521?

CVE-2020-7521 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.66% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7521?

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-2020-7521?

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

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Source: NVD / NIST