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CVE-2017-1000479

55
FAUCET Score

CVE-2017-1000479 describes a clickjacking vulnerability in pfSense versions 2.4.1 and lower, allowing for privileged execution of arbitrary code via the CSRF error page. This high-severity vulnerability (CVSS 8.8) is easily exploitable over the network with low complexity, requiring user interaction but leading to complete compromise of confidentiality, integrity, and availability. While not observed in active exploitation, a Metasploit module exists, indicating readily available exploit code, though there is minimal community discussion or media coverage. OPNsense, a fork of pfSense, was not affected due to an earlier fix.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.1CPE matchmatch criteria
cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*
< 16.1.16CPE matchmatch criteria
cpe:2.3:a:opnsense_project:opnsense:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
32.77%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Clickjacking Vulnerability In CSRF Error Page pfSense · Nov 21, 2017
This CVE's current EPSS score of 0.3277 is in the 99th percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

doc.pfsense.org / index.php/2.4.2_New_Features_and_Changes
Issue TrackingVendor Advisory
github.com / opnsense/core/commit/d218b225
PatchThird Party Advisory
github.com / pfsense/pfsense/commit/386d89b07
PatchThird Party Advisory
netgate.com / blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html
Third Party Advisory
securify.nl / en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html
ExploitThird Party Advisory
openwall.com / lists/oss-security/2017/11/22/7
ExploitMailing ListThird Party Advisory