CVE-2021-21726

Name: CVE-2021-21726
Creator: NVD / NIST
Published: 2021-03-12T19:15:15.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.3/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2021-21726 is a low-severity vulnerability rated 2.3/10 on the CVSS scale. Some ZTE products have an input verification vulnerability in the diagnostic function interface. Due to insufficient verification of some parameters input by users, an attacker with high privileges can cause process exception by repeatedly inputting illegal parameters. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

Some ZTE products have an input verification vulnerability in the diagnostic function interface. Due to insufficient verification of some parameters input by users, an attacker with high privileges can cause process exception by repeatedly inputting illegal parameters. This affects:<ZXONE 9700 , ZXONE 8700, ZXONE 19700><V1.40.021.021CP049, V1.0P02B219_@NCPM-RELEASE_2.40R1-20200914.set>

Metrics

CVSS 3.1

2.3/10

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

EPSS Probability

0.37%

29.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Zte	Zxone 9700 Firmware	1.40.021.021cp049
Zte	Zxone 8700 Firmware	1.40.021.021cp049
Zte	Zxone 19700 Firmware	1.0p02b219_\@ncpm-release_2.40r1-20200914.set

References

http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014664Vendor Advisory
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014664Vendor Advisory

Timeline

Published: Mar 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21726?

How severe is CVE-2021-21726?

CVE-2021-21726 has a CVSS score of 2.3/10 (LOW severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21726?

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-2021-21726?

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

Scan your code now

Source: NVD / NIST