CVE-2021-21727
HIGHZTE ZXHN F623 Firmware < 6.0.0p3t34 - Denial of Service via IPv6 Packet Amplification
Title source: llmDescription
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>
References (1)
Core 1
Core References
Vendor Advisory x_refsource_misc
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014744
Scores
CVSS v3
7.5
EPSS
0.0061
EPSS Percentile
69.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (1)
zte/zxhn_f623_firmware
< 6.0.0p3t34
Published
Mar 29, 2021
Tracked Since
Feb 18, 2026