Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: A critical **Command Injection** flaw in OPNsense.
🔥 **Consequences**: Attackers can execute arbitrary system commands, leading to full system compromise, data theft, or service disruption.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: **CWE-78** (OS Command Injection).
🔍 **Flaw**: Improper handling of the `span` parameter in the **Bridge Interface Edit** endpoint. Input is not sanitized, allowing malicious code injection.

Question 3

Who is affected? (Versions/Components)

Accepted Answer

🏢 **Affected Vendor**: OPNsense (by Deciso).
📦 **Version**: Specifically **OPNsense 25.1**.
⚠️ **Component**: Network firewall/router software based on FreeBSD.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

💀 **Attacker Capabilities**:
✅ **Full Control**: Execute commands with system privileges.
📂 **Data Access**: Read/modify sensitive config files.…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

🔐 **Exploitation Threshold**: **Medium-High**.
👤 **Auth Required**: **PR:H** (High Privileges) needed.…

Question 6

Is there a public Exp? (PoC/Wild Exploitation)

Accepted Answer

📢 **Public Exploit**:
🔗 **PoC Available**: Yes, referenced in GitHub proofs (4rdr/proofs).
⚡ **Status**: Proof-of-concept exists, but widespread wild exploitation depends on admin access availability.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**:
1️⃣ Verify OPNsense version is **25.1**.
2️⃣ Check if **Bridge Interfaces** are configured.
3️⃣ Inspect network traffic for malicious `span` parameter values in API/GUI requests.…

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

🩹 **Official Fix**:
✅ **Patch Available**: Yes, in **OPNsense 25.1.8** (Community Changelog).
🔄 **Action**: Update immediately to the latest patch version to close the command injection vector.

Question 9

What if no patch? (Workaround)

Accepted Answer

🚧 **No Patch Workaround**:
🚫 **Restrict Access**: Limit GUI access to trusted IPs only.
🛡️ **WAF/IPS**: Block requests containing suspicious `span` parameter payloads.…

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

⚠️ **Urgency**: **HIGH**.
📅 **Priority**: Patch immediately.
📉 **Risk**: CVSS Score indicates **Critical** impact (C:H, I:H, A:H). Even with auth requirements, the potential damage is severe. Don't wait!

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CVE-2025-50989 — AI Deep Analysis Summary

Q1What is this vulnerability? (Essence + Consequences)

Q2Root Cause? (CWE/Flaw)

Q3Who is affected? (Versions/Components)

Q4What can hackers do? (Privileges/Data)

Q5Is exploitation threshold high? (Auth/Config)

Q6Is there a public Exp? (PoC/Wild Exploitation)

Q7How to self-check? (Features/Scanning)

Q8Is it fixed officially? (Patch/Mitigation)

Q9What if no patch? (Workaround)

Q10Is it urgent? (Priority Suggestion)

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