What’s Vulnerable › Vulnerabilities

CVE-2021-20137

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-09 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• Gryphon Tower router: through 04.0004.12

References

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

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