CVE-2019-1859
7.2 · HIGHOverview
CVE-2019-1859 is a high-severity vulnerability affecting cisco sg200-50_firmware. It was published on May 3, 2019 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A vulnerability in the Secure Shell (SSH) authentication process of Cisco Small Business Switches software could allow an attacker to bypass client-side certificate authentication and revert to password authentication. The vulnerability exists because OpenSSH mishandles the authentication process. An attacker could exploit this vulnerability by attempting to connect to the device via SSH. A successful exploit could allow the attacker to access the configuration as an administrative user if the default credentials are not changed. There are no workarounds available; however, if client-side certificate authentication is enabled, disable it and use strong password authentication. Client-side certificate authentication is disabled by default.
Remediation
Check the references section for vendor advisories and patches from cisco. Update sg200-50_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cisco | sg200-50_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-50p_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-50fp_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-26_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-26p_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-26fp_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-18_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-10fp_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-08_firmware | >= 0, < 1.4.10.6 | Affected |
| cisco | sg200-08p_firmware | >= 0, < 1.4.10.6 | Affected |
Frequently Asked Questions
What is CVE-2019-1859?
CVE-2019-1859 is a high-severity vulnerability affecting cisco sg200-50_firmware. It was published on May 3, 2019 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2019-1859?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2019-1859?
Check the references section for vendor advisories and patches from cisco. Update sg200-50_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-1859?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-1859 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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