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CVE-2020-19201

21
FAUCET Score

CVE-2020-19201 describes a Stored Cross-Site Scripting (XSS) vulnerability in the pfSense WebGUI, specifically affecting versions 2.4.4-p2 and earlier. This flaw allows an authenticated attacker to inject malicious scripts into the NAT rule description parameter, which are then executed when an administrator views the status_filter_reload.php page. Rated as MEDIUM severity (CVSS 5.4), successful exploitation could lead to limited data compromise and integrity issues, though it requires user interaction and prior authentication. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.4CPE matchmatch criteria
cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*
2.4.4CPE matchmatch criteria
cpe:2.3:a:netgate:pfsense:2.4.4:p1:*:*:*:*:*:*
2.4.4CPE matchmatch criteria
cpe:2.3:a:netgate:pfsense:2.4.4:p2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.45%
Probability of exploitation in next 30 days
EPSS Percentile
87.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0345 is in the 99th percentile among its peer group of 15,239 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

docs.netgate.com / pfsense/en/latest/releases/2-4-4-p3.html
ProductVendor Advisory
gist.github.com / dharmeshbaskaran/fd3779006361d07651a883e8a040d916
ExploitThird Party Advisory
pfsense.org / download
Vendor Advisory