When the F5 BIG-IP 12.1.0-12.1.1, 11.6.0-11.6.1, 11.5.1-11.5.5, or 11.2.1 system is configured with a wildcard IPSec tunnel endpoint, it may allow a remote attacker to disrupt or impersonate the tunnels that have completed phase 1 IPSec negotiations
Published Apr 13, 2018
6.4
MEDIUMCVSS 3.0
EPSS 0.91%
Description
When the F5 BIG-IP 12.1.0-12.1.1, 11.6.0-11.6.1, 11.5.1-11.5.5, or 11.2.1 system is configured with a wildcard IPSec tunnel endpoint, it may allow a remote attacker to disrupt or impersonate the tunnels that have completed phase 1 IPSec negotiations. The attacker must possess the necessary credentials to negotiate the phase 1 of the IPSec exchange to exploit this vulnerability; in many environment this limits the attack surface to other endpoints under the same administration.
Affected products
-
- Version 11.2.1StatusaffectedConstraints-
- Version 11.5.1-11.5.5StatusaffectedConstraints-
- Version 11.6.0-11.6.1StatusaffectedConstraints-
- Version 12.1.0-12.1.1StatusaffectedConstraints-
- 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 Networks, Inc. | n/a | n/a |
|
Configuration 1
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 2
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 3
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 4
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 5
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 6
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 7
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 8
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 9
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 10
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 11
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 12
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
Configuration 13
- ≥ 11.5.1 · ≤ 11.5.5
- ≥ 12.1.0 · ≤ 12.1.1
- 11.2.1
- 11.6.1
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:L/UI:N/S:U/C:L/I:L/A:H
AV:N/AC:M/Au:S/C:P/I:P/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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.91% (0.00905) | 58.36th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.92% (0.00922) | 58.80th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.14% (0.00140) | 50.04th | v3 (v2023.03.01) |
| Feb 20, 2024 | 0.14% (0.00140) | 48.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00147) | 48.94th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00523) | 12.55th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
No CWE recorded.
References (1)
- https://support.f5.com/csp/article/K05263202 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://support.f5.com/csp/article/K05263202 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.