What’s Vulnerable › Vulnerabilities

CVE-2020-21487

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-04 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross Site Scripting vulnerability found in Netgate pfSense 2.4.4 and ACME package v.0.6.3 allows attackers to execute arbitrary code via the RootFolder field of acme_certificates.php.

Affected products

• Netgate pfSense: 2.4.4
• Netgate Pfsense Acme Package: 0.6.3

References

• https://github.com/pfsense/FreeBSD-ports/commit/a6f443cde51e7fcf17e51f16014d3589253284d8
• https://redmine.pfsense.org/issues/9888
• https://github.com/pfsense/FreeBSD-ports/commit/a6f443cde51e7fcf17e51f16014d3589253284d8
• https://redmine.pfsense.org/issues/9888

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