CVE-2020-27718

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CVSS 3.1

7.5 high

EPSS

1%p62

Published

Dec 24, 2020 (Dec 24, 2020)

Modified

Jun 17, 2026

Description

When a BIG-IP ASM or Advanced WAF system running version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, or 11.6.1-11.6.5.2 processes requests with JSON payload, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process.

Vendors: f5
Products: big-ip advanced web application firewall, big-ip application security manager
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.0%)

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