Is CVE-2021-41025 actively exploited?

No active exploitation of CVE-2021-41025 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-41025 be exploited remotely?

Yes. CVE-2021-41025 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-41025?

CVE-2021-41025 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-41025

CRITICAL

CVE-2021-41025

CWE-362Published: December 8, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Multiple vulnerabilities in the authentication mechanism of confd in FortiWeb versions 6.4.1, 6.4.0, 6.3.0 through 6.3.15, 6.2.0 through 6.2.6, 6.1.0 through 6.1.2, 6.0.0 thorugh 6.0.7, including an instance of concurrent execution using shared resource with improper synchronization and one of authentication bypass by capture-replay, may allow a remote unauthenticated attacker to circumvent the authentication process and authenticate as a legitimate cluster peer.

NVD Source

Technical Analysis

CVE-2021-41025 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.