What’s Vulnerable › Vulnerabilities

CVE-2021-23029

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-14 · updated 2026-06-17
• Weakness: CWE-918

Description

On version 16.0.x before 16.0.1.2, insufficient permission checks may allow authenticated users with guest privileges to perform Server-Side Request Forgery (SSRF) attacks through F5 Advanced Web Application Firewall (WAF) and the BIG-IP ASM Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 Big-Ip Advanced Web Application Firewall: from 16.0.0 before 16.0.1.2 — fixed in 16.0.1.2
• BIG-IP ASM: from 16.0.0 before 16.0.1.2 — fixed in 16.0.1.2

How to fix

Upgrade to a fixed version: F5 Big-Ip Advanced Web Application Firewall 16.0.1.2; BIG-IP ASM 16.0.1.2. Check the vendor advisory for mitigations.

References

• https://support.f5.com/csp/article/K52420610
• https://support.f5.com/csp/article/K52420610

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