CVE-2021-43080
mediumpriority · track · 22EPSS 0.004 · 36 %ileEUUSEPSS · scored 2026-10-24
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
- Fortinet Fortinet FortiOS≤ FortiOS 7.2.0, 7.0.5, 7.0.4, 7.0.3, 7.0.2, 7.0.1, 7.0.0, 6.4.9, 6.4.8, 6.4.7, 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0enisa_euvdEU
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2021-43080/cnnvd
- https://fortiguard.com/psirt/FG-IR-21-222cnnvd
- https://vigilance.fr/vulnerability/FortiOS-Cross-Site-Scripting-via-Security-Fabric-External-Connector-39197cnnvd
- https://www.fortinet.com/cnPatchcnnvd
- https://fortiguard.com/psirt/FG-IR-21-222enisa_euvd
- https://fortiguard.com/psirt/FG-IR-21-222Vendor Advisorynvd
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