In some circumstances, the Traffic Management Microkernel (TMM) does not properly handle certain malformed Websockets requests/responses, which allows remote attackers to cause a denial-of-service (DoS) or possible remote code execution on the F5 BIG-IP system running versions 13.0.0 - 13.1.0.3 or 12.1.0 - 12.1.3.1
Published Mar 22, 2018
8.1
HIGHCVSS 3.0
EPSS 4.29%
Description
In some circumstances, the Traffic Management Microkernel (TMM) does not properly handle certain malformed Websockets requests/responses, which allows remote attackers to cause a denial-of-service (DoS) or possible remote code execution on the F5 BIG-IP system running versions 13.0.0 - 13.1.0.3 or 12.1.0 - 12.1.3.1.
Affected products
-
- Version 12.1.0 - 12.1.3.1StatusaffectedConstraints-
- Version 13.0.0 - 13.1.0.3StatusaffectedConstraints-
- 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 |
|
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · ≤ 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · ≤ 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- ≥ 12.1.0 · < 12.1.3.2
- ≥ 13.0.0 · < 13.1.0.4
- 1.0.0
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:C/I:C/A:C
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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.29% (0.04292) | 90.81th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.53% (0.04534) | 90.30th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.25% (0.03251) | 85.97th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.53% (0.07531) | 86.08th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.25% (0.03251) | 86.27th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.62% (0.00617) | 79.01th | v3 (v2023.03.01) |
| Jun 24, 2024 | 0.62% (0.00617) | 78.89th | v3 (v2023.03.01) |
| May 2, 2024 | 0.63% (0.00626) | 78.75th | v3 (v2023.03.01) |
| Jan 30, 2024 | 0.63% (0.00626) | 76.75th | v3 (v2023.03.01) |
| Aug 13, 2023 | 0.61% (0.00611) | 75.91th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.64% (0.00639) | 76.38th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.93% (0.00933) | 80.62th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02166) | 80.16th | v2 (v2022.01.01) |
| Dec 17, 2022 | 2.17% (0.02166) | 79.61th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.98% (0.01978) | 77.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.98% (0.01978) | 56.34th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.46% (0.01459) | 32.95th | v1 |
| Jan 6, 2022 | 1.46% (0.01459) | 32.25th | v1 |
| Sep 1, 2021 | 1.46% (0.01459) | 72.46th | v1 |
| Apr 14, 2021 | 1.46% (0.01459) | 0.00th | v1 |
No CWE recorded.
References (2)
- http://www.securitytracker.com/id/1040558 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://support.f5.com/csp/article/K11718033 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1040558 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://support.f5.com/csp/article/K11718033 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.