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CVE-2021-37273 Details

Description

A Denial of Service issue exists in China Telecom Corporation EPON Tianyi Gateway ZXHN F450(EPON ONU) 3.0. Tianyi Gateway is a hardware terminal of "Optical Modem Smart Router." Attackers can use this vulnerability to restart the device multiple times.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.cnvd.org.cn/flaw/show/2958526	CVE	Third Party Advisory
https://www.cnvd.org.cn/flaw/show/2958526	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-noinfo	Insufficient Information to Classify Weakness	[email protected]

Affected Products

Product	Versions
chinatelecom epon tianyi gateway zxhn f450 firmware	3.0
CPE cpe:2.3:o:chinatelecom:epon_tianyi_gateway_zxhn_f450_firmware:3.0:::::::* Remediation No remediation found in references.
chinatelecom epon tianyi gateway zxhn f450	All versions
CPE cpe:2.3:h:chinatelecom:epon_tianyi_gateway_zxhn_f450:-:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 7, 2021	Initial Analysis	[email protected]