Is CVE-2020-21487 actively exploited?

CVE-2020-21487 has no public evidence of in-the-wild exploitation as of 2025-02-13.

What is the CVSS score for CVE-2020-21487?

CVE-2020-21487 has a CVSS score of 9.6 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

How do I patch CVE-2020-21487?

Patch guidance is available from netgate security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-21487.

Fix CVE-2020-21487 - CRITICAL netgate pfsense

Q: Which products are affected by CVE-2020-21487?

2 products: netgate pfsense, netgate pfsense acme package.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-79 · Cross-site Scripting (XSS)CWE-79 · Cross-site Scripting (XSS)

Metadata

Primary Vendor: NETGATE
Published: 4/4/2023
Last Modified: 2/13/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-21487

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary