CVE-2021-23033: f5 big-ip_advanced_web_application_firewall Improper Input Validation
Vulnerability summary
CVE-2021-23033 is a high (CVSS 7.5) Improper Input Validation vulnerability in f5 big-ip_advanced_web_application_firewall. EPSS estimates a 0.93% chance of exploitation in the next 30 days, higher than 60.3% of scored vulnerabilities.
Timeline
- 14-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
On BIG-IP Advanced WAF and BIG-IP ASM version 16.x before 16.1.0x, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x, when a WebSocket profile is configured on a virtual server, undisclosed requests can cause bd to terminate. 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 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F52 products
- big-ip_advanced_web_application_firewall≥ 12.1.0, ≤ 12.1.6 | ≥ 13.1.0, < 13.1.4.1 | ≥ 14.1.0, < 14.1.4.3 | ≥ 15.1.0, < 15.1.3.1 | ≥ 16.0.0, < 16.1.0
- big-ip_application_security_manager≥ 12.1.0, ≤ 12.1.6 | ≥ 13.1.0, < 13.1.4.1 | ≥ 14.1.0, < 14.1.4.3 | ≥ 15.1.0, < 15.1.3.1 | ≥ 16.0.0, < 16.1.0
1 vendor · 2 products