by Kastro
Paper/Archive/CVE-2025-50989

CVE-2025-50989

OPNsense OPNsense — OPNsense before 25.1.8 contains an authenticated command injection vulnerability in its Bridge Interface Edit endpoint (interfaces_bridge…

EPSS 11%public exploitCVSS 9.1
critical.is priorityof 100
57
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 95.9.959 × 2019.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
OPNsense< 25.1.825.1.8CNA

Scores by source

mitre (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA ADP8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refgithub.com/4rdr/proofs/blob/main/info/OPNsense-25.1-Command-Injection-via-span-parameter.mdrefgithub.com/opnsense/changelog/blob/640e96ed6a783254283aead0d0b744fc9143ce6d/community/25.1/25.1.8#L34