CVE-2020-5876
8.1 · HIGHOverview
CVE-2020-5876 is a high-severity vulnerability affecting f5 big-ip_access_policy_manager. It was published on April 30, 2020 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
On BIG-IP 15.0.0-15.0.1.3, 14.1.0-14.1.2.3, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, a race condition exists where mcpd and other processes may make unencrypted connection attempts to a new configuration sync peer. The race condition can occur when changing the ConfigSync IP address of a peer, adding a new peer, or when the Traffic Management Microkernel (TMM) first starts up.
Remediation
Check the references section for vendor advisories and patches from f5. Update big-ip_access_policy_manager 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 |
|---|---|---|---|
| f5 | big-ip_access_policy_manager | 11.6.1 | Affected |
| f5 | big-ip_advanced_firewall_manager | 11.6.1 | Affected |
| f5 | big-ip_analytics | 11.6.1 | Affected |
| f5 | big-ip_application_acceleration_manager | 11.6.1 | Affected |
| f5 | big-ip_application_security_manager | 11.6.1 | Affected |
| f5 | big-ip_domain_name_system | 11.6.1 | Affected |
| f5 | big-ip_fraud_protection_service | 11.6.1 | Affected |
| f5 | big-ip_global_traffic_manager | 11.6.1 | Affected |
| f5 | big-ip_link_controller | 11.6.1 | Affected |
| f5 | big-ip_local_traffic_manager | 11.6.1 | Affected |
| f5 | big-ip_policy_enforcement_manager | 11.6.1 | Affected |
Frequently Asked Questions
What is CVE-2020-5876?
CVE-2020-5876 is a high-severity vulnerability affecting f5 big-ip_access_policy_manager. It was published on April 30, 2020 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2020-5876?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-5876?
Check the references section for vendor advisories and patches from f5. Update big-ip_access_policy_manager 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-2020-5876?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-5876 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.
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