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Vulnerability record · CVE-2024-57273 · published 14 May 2025

CVE-2024-57273: Netgate pfsense ce cross-site scripting vulnerability

Netgate · Pfsense Ce

Netgate pfSense CE (prior to 2.8.0 beta release) and corresponding Plus builds is vulnerable to Cross-site scripting (XSS) in the Automatic Configuration Backup (ACB) service, allowing remote attackers to execute arbitrary JavaScript, delete backups, or leak sensitive information via an unsanitized "reason" field and a derivable device key generated from the public SSH key.

5.4 CVSS 3.1 Medium EPSS 1.3% · top 31.3% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
3References, 1 tagged exploit
5 Jul 2026Last modified by NVD

Description

Netgate pfSense CE (prior to 2.8.0 beta release) and corresponding Plus builds is vulnerable to Cross-site scripting (XSS) in the Automatic Configuration Backup (ACB) service, allowing remote attackers to execute arbitrary JavaScript, delete backups, or leak sensitive information via an unsanitized "reason" field and a derivable device key generated from the public SSH key.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.brillantit.com/exploiting-pfsense-xss-command-injection-cloud-hijack/ ExploitThird Party Advisory
https://docs.netgate.com/downloads/pfSense-SA-25_03.webgui.asc Third Party Advisory
https://www.netgate.com/blog/important-security-updates-for-pfsense-plus-24.11-and-ce-2.7.2 Release Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-27100Netgate pfsense plus improper restriction of authentication attempts vulnerabilityImproper restriction of excessive authentication attempts in the SSHGuard component of Netgate pfSense Plus software v22.05.1 and pfSense CE software…EPSS 9.8%8.8CVE-2024-54780Netgate pfsense ce code injection vulnerabilityNetgate pfSense CE (prior to 2.8.0 beta release) and corresponding Plus builds are vulnerable to command injection in the OpenVPN widget due to impro…EPSS 12%8.8CVE-2023-48123pfSense web GUI packet_capture.php remote code executionpfSense Plus 23.05.1 and earlier and pfSense CE 2.7.0 allow a remote attacker to execute arbitrary code through a crafted request to packet_capture.p…EPSS 68%analysed8.8CVE-2023-42326pfSense WebGUI GIF/GRE Interface Command InjectionNetgate pfSense 2.7.0 contains a command injection flaw in the interfaces_gif_edit.php and interfaces_gre_edit.php WebGUI components. A remote attack…EPSS 64%analysed8.8CVE-2022-24299Netgate pfsense improper input validation vulnerabilityImproper input validation vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions prior to 2.6.0 and pfSense Plus software version…EPSS 1.9%8.8CVE-2022-26019Netgate pfsense path traversal vulnerabilityImproper access control vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions prior to 2.6.0 and pfSense Plus software versions …EPSS 4.5%6.1CVE-2021-20729Netgate pfsense plus cross-site scripting vulnerabilityCross-site scripting vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions…EPSS 2.9%5.9CVE-2023-48795SSH Terrapin attack downgrades channel integrity in OpenSSH and many SSH implementationsThe SSH transport protocol with certain OpenSSH extensions mishandles the handshake and sequence numbers, letting a remote attacker omit packets from…EPSS 93%analysed

Source: NIST National Vulnerability Database (record CVE-2024-57273), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.