XSS in Netgate Pfsense Ce
CVE-2024-57273
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (68.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.000
Affected products
Weakness classification (CWE)
References
- netgate.com (Product)
- blog.brillantit.com/exploiting-pfsense-xss-command-injection-cloud-hijack/ (Exploit, Third Party Advisory)
- www.netgate.com/blog/important-security-updates-for-pfsense-plus-24.11-and-ce-2… (Release Notes)
- docs.netgate.com/downloads/pfSense-SA-25_03.webgui.asc (Third Party Advisory)
Frequently asked questions
- What is CVE-2024-57273?
- CVE-2024-57273 is a medium-severity vulnerability in Netgate Pfsense Ce, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-05-14.
- How severe is CVE-2024-57273?
- Medium severity. CVSS v3 base score is 5.4 out of 10.