CVE-2024-57273
CVE-2024-57273 is a medium-severity vulnerability in Netgate Pfsense Ce with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-55005
- Weakness: CWE-79
- Affected product: Netgate Pfsense Ce
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2024-57273?
- CVE-2024-57273 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2024-57273 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-57273?
- CVE-2024-57273 primarily affects Netgate Pfsense Ce. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2024-57273?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-57273 have an EU (EUVD) identifier?
- Yes. CVE-2024-57273 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-55005.
- When was CVE-2024-57273 published?
- CVE-2024-57273 was published on 2025-05-14 and last updated on 2026-07-05.
References
- https://blog.brillantit.com/exploiting-pfsense-xss-command-injection-cloud-hijack/
- https://docs.netgate.com/downloads/pfSense-SA-25_03.webgui.asc
- https://www.netgate.com/blog/important-security-updates-for-pfsense-plus-24.11-and-ce-2.7.2
EU advisories (EUVD)
Affected products (2)
- cpe:2.3:a:netgate:pfsense_ce:*:*:*:*:*:*:*:*
- cpe:2.3:a:netgate:pfsense_plus:*:*:*:*:*:*:*:*
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