CVE-2021-23049: f5 big-ip_access_policy_manager Uncontrolled Resource Consumption
Vulnerability summary
CVE-2021-23049 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.9% 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 and 15.1.x before 15.1.3, when the iRules RESOLVER::summarize command is used on a virtual server, undisclosed requests can cause an increase in Traffic Management Microkernel (TMM) memory utilization resulting in an out-of-memory condition and a denial-of-service (DoS). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.96%
Chance of exploitation in the next 30 days
Percentile
61%
Versus all other CVEs
30-day change
0.00 pp
From 0.96% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F511 products
- big-ip_access_policy_manager≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_advanced_firewall_manager≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_advanced_web_application_firewall≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_analytics≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
- big-ip_application_acceleration_manager≥ 15.1.0, < 15.1.3 | ≥ 16.0.0, < 16.0.1.2
1 vendor · 11 products