What’s Vulnerable › Vulnerabilities

CVE-2021-43080

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-06 · updated 2026-06-17
• Weakness: CWE-79

Description

An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiOS version 7.2.0, version 6.4.0 through 6.4.9, version 7.0.0 through 7.0.5 may allow an authenticated attacker to perform a stored cross site scripting (XSS) attack through the URI parameter via the Threat Feed IP address section of the Security Fabric External connectors.

Affected products

• Fortinet FortiOS (FortiGate): from 6.4.0 before 6.4.10; from 7.0.0 before 7.0.6; 7.2.0 — fixed in 6.4.10, 7.0.6

How to fix

Upgrade to a fixed version: Fortinet FortiOS (FortiGate) 6.4.10, 7.0.6. Check the vendor advisory for mitigations.

References

• https://fortiguard.com/psirt/FG-IR-21-222
• https://fortiguard.com/psirt/FG-IR-21-222

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