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Vulnerability record · CVE-2025-50989 · published 27 August 2025

CVE-2025-50989: Opnsense os command injection vulnerability

Opnsense · Opnsense

OPNsense before 25.1.8 contains an authenticated command injection vulnerability in its Bridge Interface Edit endpoint (interfaces_bridge_edit.php). The span POST parameter is concatenated into a system-level command without proper sanitization or escaping, allowing an administrator to inject arbitrary shell operators and payloads. Successful exploitation results in remote code execution with the privileges of the web service (typically root), potentially leading to full system compromise or lateral movement. This vulnerability arises from inadequate input validation and improper handling of user-supplied data in backend command invocations.

9.1 CVSS 3.1 Critical EPSS 8.4% · top 5.2% CWE-78 · OS command injectionCWE-77 · Command injection
9.1CVSS 3.1 base score
8.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

OPNsense before 25.1.8 contains an authenticated command injection vulnerability in its Bridge Interface Edit endpoint (interfaces_bridge_edit.php). The span POST parameter is concatenated into a system-level command without proper sanitization or escaping, allowing an administrator to inject arbitrary shell operators and payloads. Successful exploitation results in remote code execution with the privileges of the web service (typically root), potentially leading to full system compromise or lateral movement. This vulnerability arises from inadequate input validation and improper handling of user-supplied data in backend command invocations.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/4rdr/proofs/blob/main/info/OPNsense-25.1-Command-Injection-via-span-parameter.md ExploitThird Party Advisory
https://github.com/opnsense/changelog/blob/640e96ed6a783254283aead0d0b744fc9143ce6d/community/25.1/25.1.8#L34 Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-50989), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.