CVE-2021-20137

6.1 mediumEPSS 2.3%

Medium (6.1) in gryphonconnect gryphon tower firmware. EPSS 2.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

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

EPSS: 2.3% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-12-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

gryphonconnect:gryphon_tower_firmware

References

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

Check your stack JSON