Vulnerability Monitor

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CVE-2021-33601

A vulnerability was discovered in the web user interface of F-Secure Internet Gatekeeper. An authenticated user can modify settings through the web user interface in a way that could lead to an arbitrary code execution on the F-Secure Internet Gatekeeper server.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.6, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required requiring only low-level privileges . The vulnerability impacts limited data confidentiality, integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from f-secure organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-09-28T10:15:08.167

Last Modified

2024-11-21T06:09:10.783

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.6 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.0

Impact Score

6.4

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	f-secure	internet_gatekeeper	≤ 5.50.47	Yes

References

https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame Vendor Advisory ([email protected])
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33601 Vendor Advisory ([email protected])
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33601 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For f-secure's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.