In F5 BIG-IP LTM, AAM, AFM, APM, ASM, Link Controller, PEM, PSM software version 12.0.0 to 12.1.2, 11.6.0 to 11.6.1, 11.4.0 to 11.5.4, when a virtual server uses the standard configuration of HTTP/2 or SPDY profile with Client SSL profile, and the client initiates a number of concurrent streams beyond the advertised limit can cause a disruption of service
Published Oct 27, 2017
5.9
MEDIUMCVSS 3.0
EPSS 1.67%
Description
In F5 BIG-IP LTM, AAM, AFM, APM, ASM, Link Controller, PEM, PSM software version 12.0.0 to 12.1.2, 11.6.0 to 11.6.1, 11.4.0 to 11.5.4, when a virtual server uses the standard configuration of HTTP/2 or SPDY profile with Client SSL profile, and the client initiates a number of concurrent streams beyond the advertised limit can cause a disruption of service. Remote client initiating stream beyond the advertised limit can cause a disruption of service. The Traffic Management Microkernel (TMM) data plane is exposed to this issue; the control plane is not exposed.
Affected products
- Vendor F5 Networks, Inc. Product BIG-IP LTM, AAM, AFM, APM, ASM, Link Controller, PEM, PSM Defaultn/a
- Version " 11.5.4StatusaffectedConstraints-
- Version " 11.6.1StatusaffectedConstraints-
- Version €StatusaffectedConstraints-
- Version 11.4.0 âStatusaffectedConstraints-
- Version 11.6.0 âStatusaffectedConstraints-
- Version 12.0.0 - 12.1.2StatusaffectedConstraints-
- 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. | BIG-IP LTM, AAM, AFM, APM, ASM, Link Controller, PEM, PSM | n/a |
|
Configuration 1
- ≥ 11.4.0 · ≤ 11.5.3
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 2
- ≥ 11.4.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 3
- ≥ 11.4.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 4
- ≥ 11.5.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 5
- ≥ 11.5.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 6
- ≥ 11.5.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 7
- ≥ 11.5.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
Configuration 8
- > 11.4.0 · ≤ 11.5.4
- 11.6.0
- 11.6.1
- 12.0.0
- 12.1.0
- 12.1.1
- 12.1.2
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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.67% (0.01674) | 76.02th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.67% (0.01674) | 73.75th | v5 (v2026.06.15) |
| Mar 29, 2025 | 2.23% (0.02231) | 74.15th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.28% (0.00280) | 68.73th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00280) | 67.51th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.28% (0.00280) | 64.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.65% (0.00653) | 76.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/101606 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039671 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://support.f5.com/csp/article/K22541983 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101606 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039671 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://support.f5.com/csp/article/K22541983 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.