CVE-2021-22124

HIGH

7.5

CVSS Score

Published: August 4, 2021 at 06:18 PM UTC

Updated: June 17, 2026 at 03:36 AM UTC

2 products affected across 1 vendorFortiSandboxFortiAuthenticator

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

An uncontrolled resource consumption (denial of service) vulnerability in the login modules of FortiSandbox 3.2.0 through 3.2.2, 3.1.0 through 3.1.4, and 3.0.0 through 3.0.6; and FortiAuthenticator before 6.0.6 may allow an unauthenticated attacker to bring the device into an unresponsive state via specifically-crafted long request parameters.

Affected

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

FortiAuthenticator · Fortinet

95%

v < 6.0.64.0.0 ≤ v ≤ 4.3.45.0.0 ≤ v ≤ 5.5.06.0.0 ≤ v < 6.0.6

Affected range stops below 6.0.6, so it looks safe — our inference, not a vendor statement

FortiSandbox · Fortinet

95%

v < 6.0.63.0.0 ≤ v < 3.0.73.1.0 ≤ v < 3.1.53.2.0 ≤ v < 3.2.2

Affected range stops below 3.0.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.1.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.2.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

Patch and advisory references

https://fortiguard.com/advisory/FG-IR-20-170

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://fortiguard.com/advisory/FG-IR-20-170

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHfortinet

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-400

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