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CVE-2019-11409

87
FAUCET Score

CVE-2019-11409 is a critical command injection vulnerability in the Operator Panel module (app/operator_panel/exec.php) of FusionPBX version 4.4.3. This flaw allows authenticated non-administrative users to execute arbitrary commands on the host system due to insufficient input validation. The vulnerability carries a CVSS score of 8.8 (High), indicating a network-exploitable, low-complexity attack that can lead to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, a Metasploit module exists for this vulnerability, and its EPSS score of 0.84665 suggests a high likelihood of exploitation, despite limited public discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.4.3CPE matchmatch criteria
cpe:2.3:a:fusionpbx:fusionpbx:4.4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
87.48%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: FusionPBX Operator Panel exec.php Command Execution · Jun 6, 2019
ExploitDB: EDB-47697 · Nov 20, 2019
This CVE's current EPSS score of 0.8748 is in the 100th percentile among its peer group of 17,808 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

packetstormsecurity.com / files/153256/FusionPBX-4.4.3-Remote-Command-Execution.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/155344/FusionPBX-Operator-Panel-exec.php-Command-Execution.html
ExploitThird Party AdvisoryVDB Entry
blog.gdssecurity.com / labs/2019/6/7/rce-using-caller-id-multiple-vulnerabilities-in-fusionpbx.html
ExploitThird Party Advisory
github.com / fusionpbx/fusionpbx/commit/e43ca27ba2d9c0109a6bf198fe2f8d79f63e0611
PatchThird Party Advisory