CVE-2015-6511
CVE-2015-6511 is a medium-severity vulnerability in Netgate Pfsense with a CVSS 2.0 base score of 4.3. 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 2.0 base score 4.3)
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Netgate Pfsense
- Published:
- Last modified:
Description
Cross-site scripting (XSS) vulnerability in pfSense before 2.2.3 allows remote attackers to inject arbitrary web script or HTML via the server[] parameter to services_ntpd.php.
Frequently asked questions
- What is CVE-2015-6511?
- Cross-site scripting (XSS) vulnerability in pfSense before 2.2.3 allows remote attackers to inject arbitrary web script or HTML via the server[] parameter to services_ntpd.php.
- How severe is CVE-2015-6511?
- CVE-2015-6511 has a CVSS 2.0 base score of 4.3, rated medium severity.
- Is CVE-2015-6511 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-6511?
- CVE-2015-6511 affects Netgate Pfsense. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2015-6511?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2015-6511 published?
- CVE-2015-6511 was published on 2015-08-18 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*
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