PT-2021-21599 · China Telecom · Zxhn F450

Published 2021-09-28 · Updated 2021-10-07 · CVE-2021-37273

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions China Telecom Corporation EPON Tianyi Gateway ZXHN F450(EPON ONU) version 3.0

Description A Denial of Service issue exists in the China Telecom Corporation EPON Tianyi Gateway ZXHN F450(EPON ONU). The Tianyi Gateway is a hardware terminal of "Optical Modem Smart Router." Attackers can use this issue to restart the device multiple times.

Recommendations For China Telecom Corporation EPON Tianyi Gateway ZXHN F450(EPON ONU) version 3.0, at the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Related Identifiers

CVE-2021-37273

Affected Products

Zxhn F450

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-37273 · Security Note
• https://osv.dev/vulnerability/CVE-2021-37273 · Vendor Advisory
• https://t.me/cvenotify/22055 · Telegram Post
• https://t.me/cibsecurity/29597 · Telegram Post
• https://cnvd.org.cn/flaw/show/2958526 · Note