A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages
Published May 29, 2019 ·Due Jul 10, 2022
6.5
MEDIUMCVSS 3.1
EPSS 33.65%
Description
A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.
Affected products
-
- Version FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier, FortiProxy 2.0.0, 1.2.8 and earlierStatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Fortinet | Fortinet FortiOS and FortiProxy | n/a |
|
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
Date Added
Jan 10, 2022
Patch Due
Jul 10, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Oct 23, 2024 · SSVC 2.0.3
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 33.65% (0.33647) | 98.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 33.65% (0.33647) | 98.16th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.11% (0.01114) | 77.53th | v4 (v2025.03.14) |
| Nov 18, 2025 | 4.21% (0.04205) | 87.62th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.12% (0.01116) | 76.23th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.28% (0.07284) | 85.78th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.82% (0.00817) | 82.03th | v3 (v2023.03.01) |
| Mar 13, 2024 | 0.82% (0.00817) | 81.41th | v3 (v2023.03.01) |
| May 22, 2023 | 0.82% (0.00817) | 79.40th | v3 (v2023.03.01) |
| Mar 18, 2023 | 0.58% (0.00577) | 74.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.63% (0.00625) | 75.66th | 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 | 0.66% (0.00663) | 18.75th | v1 |
| Jan 6, 2022 | 0.66% (0.00663) | 18.17th | v1 |
| Sep 1, 2021 | 0.66% (0.00663) | 47.40th | v1 |
| Apr 14, 2021 | 0.66% (0.00663) | 0.00th | v1 |
References (3)
- https://fortiguard.com/advisory/FG-IR-18-388 x_refsource_CONFIRMMitigationVendor Advisory
- https://fortiguard.com/advisory/FG-IR-20-229 x_refsource_CONFIRMVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13383 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| https://fortiguard.com/advisory/FG-IR-18-388 | x_refsource_CONFIRMMitigationVendor Advisory | |
| https://fortiguard.com/advisory/FG-IR-20-229 | x_refsource_CONFIRMVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13383 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.