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CVE-2019-6677

On BIG-IP versions 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, 13.1.0-13.1.3.1, and 12.1.0-12.1.5, under certain conditions when using…

High7.5EPSS 1.0%
Published
Updated
Reserved
Assigned by
f5

Description

On BIG-IP versions 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, 13.1.0-13.1.3.1, and 12.1.0-12.1.5, under certain conditions when using custom TCP congestion control settings in a TCP profile, TMM stops processing traffic when processed by an iRule.

Scores

CVSS scores of CVE-2019-6677, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
1.0% · top 36% of all CVEs (6 Nov 2026)
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

  • DoS

Affected products

  • F5 · BIG-IP

    • affected 15.0.0-15.0.1
    • affected 14.1.0-14.1.2
    • affected 14.0.0-14.0.1
    • affected 13.1.0-13.1.3.1
    • affected 12.1.0-12.1.5

References (1)

Sources

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

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Record last updated .