CVE-2021-37273 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Chinatelecom	Epon Tianyi Gateway Zxhn F450 Firmware	3.0
Chinatelecom	Epon Tianyi Gateway Zxhn F450	-

References

https://www.cnvd.org.cn/flaw/show/2958526Third Party Advisory
https://www.cnvd.org.cn/flaw/show/2958526Third Party Advisory

FAQ

What is CVE-2021-37273?

CVE-2021-37273 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...

How severe is CVE-2021-37273?

CVE-2021-37273 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-37273?

Check the references section above for vendor advisories and patch information. Affected products include: Chinatelecom Epon Tianyi Gateway Zxhn F450 Firmware, Chinatelecom Epon Tianyi Gateway Zxhn F450.