CVE Feed

    Dashboard / CVE / CVE-2020-27718

    CVE-2020-27718

    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.

    Published:Dec 24, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 24, 2020
    EPSS Score:0.00647
    CVSS Score:7.5

    Affected Products

    Vendor
    F5
    Product
    Big-ip Advanced Web Application Firewall
    Vendor
    F5
    Product
    Big-ip Application Security Manager

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-39458 (CVSS 8.7) — When a BIG-IP is configured with DNS caching (Such as a DNS profile with caching enabled, SSL Orchestrator, A…
    CVE-2026-22548 (CVSS 8.2) — When a BIG-IP Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests alon…
    CVE-2026-20732 (CVSS 2.3) — A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof…
    CVE-2025-61990 (CVSS 8.7) — When using a multi-bladed platform with more than one blade, undisclosed traffic can cause the Traffic Managem…
    CVE-2025-58071 (CVSS 8.7) — When IPsec is configured on the BIG-IP system, undisclosed traffic can cause the Traffic Management Microkerne…
    CVE-2025-61935 (CVSS 8.7) — When a BIG IP Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests can …
    CVE-2025-54755 (CVSS 6.9) — A directory traversal vulnerability exists in TMUI that allows a highly privileged authenticated attacker to a…
    CVE-2025-59483 (CVSS 8.5) — A validation vulnerability exists in an undisclosed URL in the Configuration utility.  Note: Software versions…
    CVE-2025-59481 (CVSS 8.5) — A vulnerability exists in an undisclosed iControl REST and BIG-IP TMOS Shell (tmsh) command that may allow an …
    CVE-2025-61958 (CVSS 8.5) — A vulnerability exists in the iHealth command that may allow an authenticated attacker with at least a resourc…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High