VulnerabilityAnalyzed

CVE-2025-50989

OPNsense before 25.1.8 contains an authenticated command injection vulnerability in its Bridge Interface Edit endpoint (interfaces_bridge_edit.php).

CRITICAL 9.1EPSS 7.98%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (7.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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: 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS: 7.98% probability · 94th percentile
CISA KEV: Not listed
Weakness: CWE-78, CWE-77
Affected: opnsense/opnsense
Source: cve@mitre.org

References

https://github.com/4rdr/proofs/blob/main/info/OPNsense-25.1-Command-Injection-via-span-parameter.mdExploit, Third Party Advisory
https://github.com/opnsense/changelog/blob/640e96ed6a783254283aead0d0b744fc9143ce6d/community/25.1/25.1.8#L34Product

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.