CVE-2021-33600

A denial-of-service (DoS) vulnerability was discovered in the web user interface of F-Secure Internet Gatekeeper. The vulnerability occurs because of an attacker can trigger assertion via malformed HTTP packet to web interface. An unauthenticated attacker could exploit this vulnerability by sending a large username parameter. A successful exploitation could lead to a denial-of-service of the product.

• CWE-617

• https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameVendor Advisory
• https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33600Vendor Advisory
• https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameVendor Advisory
• https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33600Vendor Advisory

Published

Sep 28, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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