CVE-2024-20500
5.8 · MEDIUMOverview
CVE-2024-20500 is a medium-severity vulnerability affecting cisco meraki_z4c_firmware. It was published on October 2, 2024 and has a CVSS 3.1 base score of 5.8 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition in the AnyConnect service on an affected device.
This vulnerability is due to insufficient resource management when establishing TLS/SSL sessions. An attacker could exploit this vulnerability by sending a series of crafted TLS/SSL messages to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to stop accepting new connections, preventing new SSL VPN connections from being established. Existing SSL VPN sessions are not impacted.
Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention.
Remediation
Check the references section for vendor advisories and patches from cisco. Update meraki_z4c_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 | meraki_z4c_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_z4_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_z3c_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_z3_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_vmx_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_mx600_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_mx450_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_mx400_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_mx250_firmware | >= 16.2, < 18.211.2 | Affected |
| cisco | meraki_mx105_firmware | >= 16.2, < 18.211.2 | Affected |
Frequently Asked Questions
What is CVE-2024-20500?
CVE-2024-20500 is a medium-severity vulnerability affecting cisco meraki_z4c_firmware. It was published on October 2, 2024 and has a CVSS 3.1 base score of 5.8 (MEDIUM).
How severe is CVE-2024-20500?
This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2024-20500?
Check the references section for vendor advisories and patches from cisco. Update meraki_z4c_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-2024-20500?
CyberStrike's AI-powered security agents can automatically detect CVE-2024-20500 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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