Missing authorization in BIG-IP ASM/Advanced WAF
Priority MEDIUM 40CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.
Summary
On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, and 14.1.x before 14.1.4, BIG-IP Advanced WAF and ASM are missing authorization checks for file uploads to a specific directory within the REST API which might allow Authenticated users with guest privileges to upload files. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Why it matters now
EPSS 0.00804 56th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | BIG-IP ASM/Advanced WAF | 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, and 14.1.x before 14.1.4 | — | No fix listed | CNA |
- BIG-IP ASM/Advanced WAF Vendor— Affected 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, and 14.1.x before 14.1.4 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* | 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.1 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* | 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.1 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* Versions 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.1 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.1 Vulnerable ·F5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23014
- 2026-10-03 Alias added: GHSA-f4w3-762f-pwx9
References
More F5 Big-ip Advanced Web Application Firewall vulnerabilities
- TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
- TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2023-25231 BIG-IP Configuration utility authenticated SQL injection vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2021-23014 · CVE Program
- CVE-2021-23014 · NVD
- FIRST EPSS
- GHSA-f4w3-762f-pwx9 · GitHub Advisory Database · CC BY 4.0
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