CVE-2021-21733

Name: CVE-2021-21733
Creator: NVD / NIST
Published: 2021-05-19T12:15:07.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2021-21733 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. The management system of ZXCDN is impacted by the information leak vulnerability. Attackers can make further analysis according to the information returned by the program, and then obtain some sensitive information. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

The management system of ZXCDN is impacted by the information leak vulnerability. Attackers can make further analysis according to the information returned by the program, and then obtain some sensitive information. This affects ZXCDN V7.01 all versions up to IAMV7.01.01.02.

Metrics

CVSS 3.1

4.9/10

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

EPSS Probability

0.79%

51.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Zte	Zxcdn	>= 7.01, < iamv7.01.02.02

References

https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015304Vendor Advisory
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015304Vendor Advisory

Timeline

Published: May 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21733?

How severe is CVE-2021-21733?

CVE-2021-21733 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21733?

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-2021-21733?

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

Scan your code now

Source: NVD / NIST