How severe is CVE-2025-50989?

CVE-2025-50989 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-50989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-50989?

CVE-2025-50989 affects Opnsense. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-50989?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-50989 have an EU (EUVD) identifier?

Yes. CVE-2025-50989 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25898.

When was CVE-2025-50989 published?

CVE-2025-50989 was published on 2025-08-27 and last updated on 2026-06-17.

CVE-2025-50989

CVE-2025-50989 is a critical-severity vulnerability in Opnsense with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25898
Weakness: CWE-78
Affected product: Opnsense
Published: 2025-08-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-50989?: 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.
How severe is CVE-2025-50989?: CVE-2025-50989 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-50989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-50989?: CVE-2025-50989 affects Opnsense. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-50989?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-50989 have an EU (EUVD) identifier?: Yes. CVE-2025-50989 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25898.
When was CVE-2025-50989 published?: CVE-2025-50989 was published on 2025-08-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*

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