PT-2026-8241 · Opnsense · Opnsense

Ozer Goker · Published 2026-02-15 · Updated 2026-02-15 · CVE-2019-25369

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OPNsense version 19.1

Description The software contains a stored cross-site scripting issue in the system advanced sysctl.php endpoint. Attackers can inject persistent malicious scripts through the tunable parameter by submitting POST requests. These payloads are stored and executed when authenticated users view the page.

Recommendations Apply updates to address the issue. As a temporary workaround, consider restricting access to the system advanced sysctl.php endpoint.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2019-25369

Affected Products

Opnsense

References · 8

• 🔥 https://exploit-db.com/exploits/46351 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-25369 · Security Note
• https://osv.dev/vulnerability/CVE-2019-25369 · Vendor Advisory
• https://forum.opnsense.org/index.php?topic=11469.0 · Patch
• https://t.me/CVEtracker/44763 · Telegram Post
• https://vulncheck.com/advisories/opnsense-stored-xss-via-systemadvancedsysctlphp · Note
• https://opnsense.org · Note
• https://t.me/cveNotify/152062 · Telegram Post