CVE-2021-23042: f5 big-ip_access_policy_manager Uncontrolled Resource Consumption
Vulnerability summary
CVE-2021-23042 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 0.93% chance of exploitation in the next 30 days, higher than 60% of scored vulnerabilities.
Timeline
- 14-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
On BIG-IP version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6, when an HTTP profile is configured on a virtual server, undisclosed requests can cause a significant increase in system resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.93%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
0.00 pp
From 0.93% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F514 products
- big-ip_access_policy_manager≥ 12.1.0, < 12.1.6 | ≥ 13.1.0, < 13.1.4 | ≥ 14.1.0, < 14.1.4 | ≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_advanced_firewall_manager≥ 12.1.0, < 12.1.6 | ≥ 13.1.0, < 13.1.4 | ≥ 14.1.0, < 14.1.4 | ≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_advanced_web_application_firewall≥ 12.1.0, < 12.1.6 | ≥ 13.1.0, < 13.1.4 | ≥ 14.1.0, < 14.1.4 | ≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_analytics≥ 12.1.0, < 12.1.6 | ≥ 13.1.0, < 13.1.4 | ≥ 14.1.0, < 14.1.4 | ≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_application_acceleration_manager≥ 12.1.0, < 12.1.6 | ≥ 13.1.0, < 13.1.4 | ≥ 14.1.0, < 14.1.4 | ≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
1 vendor · 14 products