CVE-2018-5541

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-25 · updated 2026-06-17
Weakness: CWE-400

Description

When F5 BIG-IP ASM 13.0.0-13.1.0.1, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.5.1-11.5.6 is processing HTTP requests, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process.

Affected products

BIG-IP ASM: from 11.5.1 through 11.5.5; from 11.6.1 through 11.6.3; from 12.1.0 through 12.1.3; from 13.0.0 through 13.1.0

References

http://www.securityfocus.com/bid/104906
https://support.f5.com/csp/article/K12403422
http://www.securityfocus.com/bid/104906
https://support.f5.com/csp/article/K12403422

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