ByteOS Network

NVD Vulnerability Details :

CVE-2019-25369

Received

Source-disclosure@vulncheck.com

Published At-15 Feb, 2026 | 14:16

Updated At-15 Feb, 2026 | 14:16

OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicious scripts via the tunable parameter. Attackers can submit POST requests with script payloads that are stored and executed in the context of authenticated user sessions when the page is viewed.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	5.1	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary	3.1	6.4	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Type: Secondary

Version: 4.0

Base score: 5.1

Base severity: MEDIUM

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Type: Primary

Version: 3.1

Base score: 6.4

Base severity: MEDIUM

Vector:

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

Weaknesses

CWE ID	Type	Source
CWE-79	Primary	disclosure@vulncheck.com

CWE ID: CWE-79

Type: Primary

Source: disclosure@vulncheck.com

References

Hyperlink	Source	Resource
https://forum.opnsense.org/index.php?topic=11469.0	disclosure@vulncheck.com	N/A
https://opnsense.org	disclosure@vulncheck.com	N/A
https://www.exploit-db.com/exploits/46351	disclosure@vulncheck.com	N/A
https://www.vulncheck.com/advisories/opnsense-stored-xss-via-systemadvancedsysctlphp	disclosure@vulncheck.com	N/A