CVE-2021-20137

MEDIUM NUCLEI

Gryphon Tower Firmware < 04.0004.12 - Reflected Cross-Site Scripting via URL Parameter

Title source: llm

Exploitation Summary

CVE-2021-20137 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

Description

A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci/site_access/ page on the Gryphon Tower router's web interface. An attacker could exploit this issue by tricking a user into following a specially crafted link, granting the attacker javascript execution in the context of the victim's browser.

Nuclei Templates (1)

Gryphon Tower - Cross-Site Scripting

MEDIUMby edoardottt

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://www.tenable.com/security/research/tra-2021-51

Scores

CVSS v3 6.1

EPSS 0.0256

EPSS Percentile 83.0%

Attack Vector NETWORK

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

Details

CWE

CWE-79

Status published

Products (1)

gryphonconnect/gryphon_tower_firmware < 04.0004.12

Published Dec 09, 2021

Tracked Since Feb 18, 2026