What is CVE-2021-21727?

CVE-2021-21727 is a high-severity vulnerability in ZTE Zxhn F623. CVSS score: 7.5/10. Published 2021-03-29.

How severe is CVE-2021-21727?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in ZTE Zxhn F623

CVE-2021-21727

A ZTE product has a DoS vulnerability. A remote attacker can amplify traffic by sending carefully constructed IPv6 packets to the affected devices, which eventually leads to device denial of service. This affects:<ZXHN F623><All versions up to V6.0.0P3T33>

EPSS: 0.014 (69.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Zte Zxhn_f623
Zte Zxhn_f623_firmware
N/a <zxhn F623> — versions <ZXHN Z500 V1.0.0.2B1.1000 & ZXHN F670L V1.1.10P1N2E>

References

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

Frequently asked questions

What is CVE-2021-21727?: CVE-2021-21727 is a high-severity vulnerability in ZTE Zxhn F623. CVSS score: 7.5/10. Published 2021-03-29.
How severe is CVE-2021-21727?: High severity. CVSS v3 base score is 7.5 out of 10.