Security readout for executives and security teams
Plain-English summary
CVE-2015-6510 covers many cross-site scripting issues in the pfSense WebGUI before version 2.2.3. A remote attacker could inject script or HTML through numerous administrative page parameters. Business risk is greatest where old pfSense management interfaces are reachable by untrusted users or networks.
Executive priority
Treat this as a legacy perimeter-management risk. It is not confirmed as actively exploited in the provided sources, but unsupported or exposed firewall administration interfaces deserve prompt remediation because compromise can affect network control planes.
Technical view
The CVE lists reflected or stored WebGUI XSS vectors across system, diagnostics, interface, package, DNS, captive portal, firmware, HA, IPsec, and OpenVPN configuration pages. The public bundle does not provide CVSS, CWE, authentication requirements, or exploit reliability details.
Likely exposure
Exposure is most likely in pfSense installations older than 2.2.3, especially where the WebGUI is reachable beyond a tightly controlled management network. The source bundle does not identify specific CPEs or supported branches beyond the pre-2.2.3 version statement.
Exploitation context
The CVE states remote attackers can inject arbitrary web script or HTML through listed WebGUI parameters. CISA KEV status is false, and the provided sources do not show active exploitation, public exploit use, or exploitation prerequisites.
Researcher notes
The evidence is source-limited: many vulnerable parameters are named, but severity scoring, CWE mapping, authentication state, and exploit maturity are absent. Validation should focus on version, WebGUI reachability, and whether the affected administrative pages exist in deployed builds.
Mitigation direction
- Upgrade affected pfSense systems to 2.2.3 or later, preferably a supported current release.
- Review the pfSense advisory for vendor-specific remediation details.
- Restrict WebGUI access to trusted management networks and administrators.
- Remove internet exposure for legacy pfSense administration interfaces.
- Prioritize replacement if the system cannot run supported pfSense versions.
Validation and detection
- Inventory pfSense appliances and record exact WebGUI software versions.
- Confirm no production appliance is running a version before 2.2.3.
- Check firewall rules for WebGUI exposure from untrusted networks.
- Review administrative access logs for unusual WebGUI activity.
- Document any compensating access controls for systems awaiting upgrade.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2015-6510 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.pfsense.org/security/advisories/pfSense-SA-15_06.webgui.ascCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.