CVE-2020-5948
CVE-2020-5948 is a critical-severity vulnerability in F5 Big-ip Access Policy Manager with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Critical (CVSS 3.x base score 9.6)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: F5 Big-ip Access Policy Manager
- Published:
- Last modified:
Description
On BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of the BIG-IP system if the victim user is granted the admin role.
Frequently asked questions
- What is CVE-2020-5948?
- On BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of the BIG-IP system if the victim user is granted the admin role.
- How severe is CVE-2020-5948?
- CVE-2020-5948 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-5948 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-5948?
- CVE-2020-5948 primarily affects F5 Big-ip Access Policy Manager. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-5948?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-5948 published?
- CVE-2020-5948 was published on 2020-12-11 and last updated on 2026-06-17.
References
Affected products (22)
- cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_access_policy_manager:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_analytics:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_security_manager:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_domain_name_system:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_fraud_protection_service:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_global_traffic_manager:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_link_controller:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_local_traffic_manager:16.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:16.0.0:*:*:*:*:*:*:*
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