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Vulnerability record · CVE-2021-41030 · published 8 December 2021

CVE-2021-41030: Fortinet forticlient enterprise management server authentication bypass by capture-replay vulnerability

Fortinet · Forticlient Enterprise Management Server

An authentication bypass by capture-replay vulnerability [CWE-294] in FortiClient EMS versions 7.0.1 and below and 6.4.4 and below may allow an unauthenticated attacker to impersonate an existing user by intercepting and re-using valid SAML authentication messages.

9.1 CVSS 3.1 Critical EPSS 0.96% · top 40.1% CWE-294 · Authentication bypass by capture-replay
9.1CVSS 3.1 base score, v2 6.4
0.96%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An authentication bypass by capture-replay vulnerability [CWE-294] in FortiClient EMS versions 7.0.1 and below and 6.4.4 and below may allow an unauthenticated attacker to impersonate an existing user by intercepting and re-using valid SAML authentication messages.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://fortiguard.com/advisory/FG-IR-21-192 PatchVendor Advisory
https://fortiguard.com/advisory/FG-IR-21-192 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-48788FortiClient EMS SQL injection allows unauthenticated remote code executionFortiClient Enterprise Management Server (EMS) versions 7.2.0 through 7.2.2 and 7.0.1 through 7.0.10 fail to neutralize special elements in SQL comma…KEVEPSS 98%analysed7.8CVE-2021-32592Fortinet forticlient uncontrolled search path element vulnerabilityAn unsafe search path vulnerability in FortiClientWindows 7.0.0, 6.4.6 and below, 6.2.x, 6.0.x and FortiClientEMS 7.0.0, 6.4.6 and below, 6.2.x, 6.0.…EPSS 0.25%7.3CVE-2024-33508Fortinet forticlient enterprise management server command injection vulnerabilityAn improper neutralization of special elements used in a command ('Command Injection') vulnerability [CWE-77] in Fortinet FortiClientEMS 7.2.0 throug…EPSS 1.3%7.2CVE-2023-45581Fortinet forticlient enterprise management server improper privilege management vulnerabilityAn improper privilege management vulnerability [CWE-269] in Fortinet FortiClientEMS version 7.2.0 through 7.2.2 and before 7.0.10 allows an Site admi…EPSS 0.82%5.4CVE-2020-15940Fortinet forticlient enterprise management server cross-site scripting vulnerabilityAn improper neutralization of input vulnerability [CWE-79] in FortiClientEMS versions 6.4.1 and below and 6.2.9 and below may allow a remote authenti…EPSS 0.74%4.9CVE-2021-36189Fortinet forticlient enterprise management server missing encryption vulnerabilityA missing encryption of sensitive data in Fortinet FortiClientEMS version 7.0.1 and below, version 6.4.4 and below allows attacker to information dis…EPSS 0.39%9.8CVE-2023-23397Microsoft Outlook improper input validation privilege escalationCVE-2023-23397 is a critical elevation of privilege flaw in Microsoft Outlook caused by improper input validation and an authentication bypass by cap…KEVEPSS 97%analysed

Source: NIST National Vulnerability Database (record CVE-2021-41030), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.