What is CVE-2021-21728?

CVE-2021-21728 is a medium-severity vulnerability in ZTE Zxa10 C300m, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-04-09.

How severe is CVE-2021-21728?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in ZTE Zxa10 C300m

CVE-2021-21728

A ZTE product has a configuration error vulnerability. Because a certain port is open by default, an attacker can consume system processing resources by flushing a large number of packets to the port, and successfully exploiting this vulnerability could reduce system processing capabilities. This affects: ZXA10 C300M all versions up to V4.3P8.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.010 (57.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Zte Zxa10_c300m
Zte Zxa10_c300m_firmware
N/a Zxa10 C300m — versions all versions up to V4.3P8

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

psirt@zte.com.cn (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21728?: CVE-2021-21728 is a medium-severity vulnerability in ZTE Zxa10 C300m, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-04-09.
How severe is CVE-2021-21728?: Medium severity. CVSS v3 base score is 5.3 out of 10.