Vulnerability · Published Oct 1, 2025 · Assigned by VulnCheck

CVE-2025-34182Deciso OPNsense < 25.7.4 /interfaces_ppps_edit.php ptpid Stored XSS

Medium 5.1

In plain English

A medium-severity cross-site scripting in OPNsense from Deciso. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.3%top 73.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

In Deciso OPNsense before 25.7.4, when creating an "Interfaces: Devices: Point-to-Point" entry, the value of the parameter ptpid is not sanitized of HTML-related characters/strings. This value is directly displayed when visiting the page/interfaces_assign.php, which can result in stored cross-site scripting. The attacker must be authenticated with at-least "Interfaces: PPPs: Edit" permission. This vulnerability has been addressed by the vendor in the product release notes as "ui: legacy_html_escape_form_data() was not escaping keys only data elements."

Affected products (as reported)

Vendor	Product	Versions
Deciso	OPNsense	0 – before 25.7.4

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

References

https://docs.opnsense.org/releases/CE_25.7.html#september-30-2025 vendor-advisory, patch
https://www.vulncheck.com/advisories/decisio-opnsense-stored-xss third-party-advisory