FortiOS 5.0.x before 5.0.12 and 5.2.x before 5.2.4 supports anonymous, export, RC4, and possibly other weak ciphers when using TLS to connect to FortiGuard servers, which allows man-in-the-middle attackers to spoof TLS content by modifying packets
Published Aug 11, 2015
6.4
MEDIUMCVSS 2.0
EPSS 1.45%
Description
FortiOS 5.0.x before 5.0.12 and 5.2.x before 5.2.4 supports anonymous, export, RC4, and possibly other weak ciphers when using TLS to connect to FortiGuard servers, which allows man-in-the-middle attackers to spoof TLS content by modifying packets.
Affected products
No data.
- 5.0.0
- 5.0.1
- 5.0.2
- 5.0.3
- 5.0.4
- 5.0.5
- 5.0.6
- 5.0.7
- 5.0.8
- 5.0.9
- 5.0.10
- 5.0.11
- 5.2.0
- 5.2.1
- 5.2.2
- 5.2.3
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:N
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.45% (0.01454) | 72.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.45% (0.01454) | 69.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.40% (0.00396) | 58.34th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00073) | 33.83th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.07% (0.00073) | 31.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00073) | 29.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
References (3)
- http://fortiguard.com/advisory/2015-07-24-weak-ciphers-suites-are-presented-towards-fortiguard-servers x_refsource_CONFIRM
- http://www.fortiguard.com/advisory/FG-IR-15-021/ x_refsource_CONFIRMVendor Advisory
- http://www.securitytracker.com/id/1033092 vdb-entryx_refsource_SECTRACK
| Link | Providers | Tags |
|---|---|---|
| http://fortiguard.com/advisory/2015-07-24-weak-ciphers-suites-are-presented-towards-fortiguard-servers | x_refsource_CONFIRM | |
| http://www.fortiguard.com/advisory/FG-IR-15-021/ | x_refsource_CONFIRMVendor Advisory | |
| http://www.securitytracker.com/id/1033092 | vdb-entryx_refsource_SECTRACK |
Change history (0)
No recorded changes yet.