CVE-2020-21487

CRITICAL EPSS 47.2%
Published Apr 4, 20233y ago · Modified Jun 17, 20261w ago
9.6 CVSS 3.1
Critical
Find Similar
Published Apr 4, 2023 3y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
9.6
Exploitability
2.8
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
47.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 2

VendorProductVersionRange
netgatepfsense2.4.4any
netgatepfsense_acme_package0.6.3any

References 2

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

Remediation

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