CVE-2021-33600

Denial of Service Vulnerability in Web Interface of F-Secure Internet Gatekeeper

HIGH
7.5
CVSS Score
Published: September 28, 2021 at 09:06 AM UTC
Updated: June 17, 2026 at 03:54 AM UTC
2 products affected across 1 vendorInternet GatekeeperF-Secure Internet Gatekeeper

Using F-Secure Internet Gatekeeper by F-Secure?

Get instant alerts when new vulnerabilities affect F-Secure Internet Gatekeeper - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.6%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card