When F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.5.1-11.5.6 is processing specially crafted TCP traffic with the Large Receive Offload (LRO) feature enabled, TMM may crash, leading to a failover event
Published Oct 10, 2018
5.9
MEDIUMCVSS 3.0
EPSS 1.42%
Description
When F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.5.1-11.5.6 is processing specially crafted TCP traffic with the Large Receive Offload (LRO) feature enabled, TMM may crash, leading to a failover event. This vulnerability is not exposed unless LRO is enabled, so most affected customers will be on 13.1.x. LRO has been available since 11.4.0 but is not enabled by default until 13.1.0.
Affected products
-
- Version 11.5.1-11.5.6StatusaffectedConstraints-
- Version 11.6.0-11.6.3.2StatusaffectedConstraints-
- Version 12.1.0-12.1.3.5StatusaffectedConstraints-
- Version 13.0.0-13.1.0.5StatusaffectedConstraints-
- 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 Networks, Inc. | n/a | n/a |
|
Configuration 1
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 2
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 3
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 4
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 5
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 6
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 7
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 8
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 9
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 10
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 11
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 12
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
Configuration 13
- ≥ 11.5.1 · ≤ 11.5.6
- ≥ 11.6.0.0 · ≤ 11.6.3.2
- ≥ 12.1.0.0 · ≤ 12.1.3.5
- ≥ 13.0.0.0 · ≤ 13.1.0.5
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.42% (0.01424) | 71.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.42% (0.01424) | 69.32th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.53% (0.03533) | 86.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.41% (0.05411) | 83.19th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.53% (0.03533) | 86.87th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.12% (0.00124) | 47.40th | v3 (v2023.03.01) |
| May 28, 2024 | 0.12% (0.00124) | 46.86th | 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) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v1 |
| Jan 6, 2022 | 0.42% (0.00416) | 9.79th | v1 |
| Sep 1, 2021 | 0.42% (0.00416) | 25.53th | v1 |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
No CWE recorded.
References (1)
- https://support.f5.com/csp/article/K07550539 x_refsource_CONFIRMMitigationVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://support.f5.com/csp/article/K07550539 | x_refsource_CONFIRMMitigationVendor Advisory |
Change history (0)
No recorded changes yet.