HIGH
On versions 15.0.0-15.0.1.1, 14.1.0-14.1.2.2, 14.0.0-14.0.1, 13.1.0-13.1.3.2, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, BIG-IP virtual servers with Loose Initiation enabled on a FastL4 profile may be subject to excessive flow usage under undisclosed conditions
Published Dec 23, 2019
7.5
HIGHCVSS 3.1
EPSS 1.01%
Description
On versions 15.0.0-15.0.1.1, 14.1.0-14.1.2.2, 14.0.0-14.0.1, 13.1.0-13.1.3.2, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, BIG-IP virtual servers with Loose Initiation enabled on a FastL4 profile may be subject to excessive flow usage under undisclosed conditions.
Affected products
-
- Version 11.5.2-11.6.5.1StatusaffectedConstraints-
- Version 12.1.0-12.1.5StatusaffectedConstraints-
- Version 13.1.0-13.1.3.2StatusaffectedConstraints-
- Version 14.0.0-14.0.1StatusaffectedConstraints-
- Version 14.1.0-14.1.2.2StatusaffectedConstraints-
- Version 15.0.0-15.0.1.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F5 | BIG-IP Virtual Edition | n/a |
|
OR
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
- ≥ 11.5.2 · ≤ 11.6.5
- ≥ 12.1.0 · ≤ 12.1.5
- ≥ 13.1.0 · ≤ 13.1.3
- ≥ 14.0.0 · < 14.0.1.1
- ≥ 14.1.0 · < 14.1.2.3
- ≥ 15.0.0 · < 15.1.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.01% 0.01014
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01014
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.01% (0.01014) | 61.98th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.01% (0.01014) | 61.74th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00103) | 42.78th | v3 (v2023.03.01) |
| Jul 3, 2024 | 0.10% (0.00103) | 42.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00103) | 40.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.84% (0.06837) | 79.65th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v1 |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
Weaknesses (1)
References (1)
- https://support.f5.com/csp/article/K76328112 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://support.f5.com/csp/article/K76328112 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner f5
Published Dec 23, 2019
Updated Aug 4, 2024
Reserved Jan 22, 2019
Link CVE-2019-6683
CISA Vulnrichment
Updated n/a