CVE-2021-26088

CriticalCVSS 9.6/10Last modified Jun 17, 2026

Description

An improper authentication vulnerability in FSSO Collector version 5.0.295 and below may allow an unauthenticated user to bypass a FSSO firewall policy and access the protected network via sending specifically crafted UDP login notification packets.

Metrics

CVSS 3.1 9.6/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

Vendor	Product	Versions
Fortinet	Fortinet FSSO Windows DC Agent, FSSO Windows CA	FSSO Windows DC Agent 5.0.295, 5.0.294; FSSO Windows CA 5.0.295, 5.0.294

References

https://fortiguard.com/advisory/FG-IR-20-191Vendor Advisory
https://fortiguard.com/advisory/FG-IR-20-191Vendor Advisory

Timeline

Published: Jul 12, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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