CVE-2019-3421

Name: CVE-2019-3421
Creator: NVD / NIST
Published: 2019-10-31T16:15:11.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 1.14%

Last modified Jun 17, 2026

CVE-2019-3421 is a high-severity vulnerability rated 8/10 on the CVSS scale. The 7520V3V1.0.0B09P27 version, and all earlier versions of ZTE product ZX297520V3 are impacted by a Command Injection vulnerability. Unauthorized users can exploit this vulnerability to control the user terminal system.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.

Description

The 7520V3V1.0.0B09P27 version, and all earlier versions of ZTE product ZX297520V3 are impacted by a Command Injection vulnerability. Unauthorized users can exploit this vulnerability to control the user terminal system.

Metrics

CVSS 3.1

8/10

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

EPSS Probability

1.14%

62.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Ztw	Zx297520v3 Firmware	<= 7520v3v1.0.0b09p27

References

http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1011643Vendor Advisory
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1011643Vendor Advisory

Timeline

Published: Oct 31, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-3421?

How severe is CVE-2019-3421?

CVE-2019-3421 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3421?

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-2019-3421?

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

Scan your code now

Source: NVD / NIST