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CVE-2024-21771

F5 AFM Signature Matching Vulnerability

High7.5EPSS 0.52%
Published
Updated
Reserved
Assigned by
f5

Description

For unspecified traffic patterns, BIG-IP AFM IPS engine may spend an excessive amount of time matching the traffic against signatures, resulting in Traffic Management Microkernel (TMM) restarting and traffic disruption.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Scores

CVSS scores of CVE-2024-21771, by who scored it
Scored byCVSSScoreVector
f5CNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Analyzed3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.52% · top 56% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • F5 · BIG-IP

    • affected 17.1.0 – < 17.1.1
    • affected 16.1.0 – < 16.1.4
    • affected 15.1.0 – < 15.1.9

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .