CVE-2020-21487

CriticalCVSS 9.6/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Apr 4, 2023
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-214899.8File Upload vulnerability in Feehicms v.2.0.8 allows a remote attacker to execute arbitrary code via the /admin/index.php?r=admin-user%2FupdCVE-2020-21495.3Jenkins Repository Connector Plugin 1.2.6 and earlier transmits configured credentials in plain text as part of its global Jenkins configuraCVE-2020-214905.5An issue was discovered in GNU Binutils 2.34. It is a memory leak when process microblaze-dis.c. This one will consume memory on each insn dCVE-2020-214935.3An issue in the component route\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.CVE-2020-214946.1A cross-site scripting (XSS) vulnerability in the component install\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary webCVE-2020-214956.1A cross-site scripting (XSS) vulnerability in the component /admin/?setting-base.htm of Xiuno BBS 4.0.4 allows attackers to execute arbitrarCVE-2020-214966.1A cross-site scripting (XSS) vulnerability in the component /admin/?setting-base.htm of Xiuno BBS 4.0.4 allows attackers to execute arbitrarCVE-2020-21505.3Jenkins Sonar Quality Gates Plugin 1.3.1 and earlier transmits configured credentials in plain text as part of its global Jenkins configuratCVE-2020-215037.5waimai Super Cms 20150505 has a logic flaw allowing attackers to modify a price, before form submission, by observing data in a packet captuCVE-2020-215046.1waimai Super Cms 20150505 contains a cross-site scripting (XSS) vulnerability in the component /admin.php?&m=Public&a=login.CVE-2020-215056.1waimai Super Cms 20150505 contains a cross-site scripting (XSS) vulnerability in the component /admin.php/Link/addsave.CVE-2020-215066.1waimai Super Cms 20150505 contains a cross-site scripting (XSS) vulnerability in the component /admin.php?m=Config&a=add.
CVE-2020-21487: Critical severity, CVSS 9.6 | Vulnix