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Penetration Testing

5 Real Vulnerabilities We Find Most Often in SMB Networks

Published by Synactive Security Team · 4 min read

Small and medium-sized businesses are increasingly targeted by attackers—not because they're easy, but because they're often under-resourced.

Here are five issues we encounter repeatedly during security assessments.

1. Exposed Remote Desktop (RDP)

Systems exposed directly to the internet remain a common ransomware entry point.

Recommendation: Restrict RDP access using VPNs, MFA, or secure gateways.

2. Weak Password Policies

Shared passwords, predictable credentials, and lack of MFA remain widespread.

Recommendation: Enforce strong passwords and enable MFA across all critical systems.

3. Outdated Software

Legacy applications frequently contain publicly known vulnerabilities.

Recommendation: Maintain a structured patch management process.

4. Excessive User Privileges

Users often have local administrator rights they don't need.

Recommendation: Apply the principle of least privilege.

5. Misconfigured Cloud Storage

Improperly configured cloud buckets and file-sharing permissions can expose sensitive data.

Recommendation: Regularly audit cloud permissions and access controls.

Conclusion

None of these vulnerabilities are particularly advanced.

Yet together, they account for a significant portion of successful attacks against SMBs.

Addressing them can dramatically improve an organization's security posture.

Want to check your network for these vulnerabilities?

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