CVE-2021-35296: Ptcl HG150-Ub Firmware

Critical severity, CVSS 9.8. EPSS: 2% chance of exploitation in the next 30 days.

An issue in the administrator authentication panel of PTCL HG150-Ub v3.0 allows attackers to bypass authentication via modification of the cookie value and Response Path.

Affected products

• Ptcl HG150-Ub Firmware: version 3.0 only

Published 2021-10-04. Last modified 2026-06-17.