CVE-2021-23014

8.8 highEPSS 0.8%

High (8.8) in f5. EPSS 0.8% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
CWE: CWE-862
Published: 2021-05-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:big-ip_advanced_web_application_firewall
f5:big-ip_application_security_manager

References

https://support.f5.com/csp/article/K23203045
https://support.f5.com/csp/article/K23203045

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