AEGLIX vulnerability intelligence
CVE-2018-13383
MEDIUM · CVSS 4.3 · Analyzed
Published: 2019-05-29 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 4.3 · MEDIUM
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-787
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Fortinet · FortiOS and FortiProxy
- Added to catalog
- 2022-01-10
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-07-10
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
Before (exclusive): 1.2.9
cpe:2.3:a:fortinet:fortiproxy:2.0.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
From (inclusive): 5.2.0
Before (exclusive): 5.2.15
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
From (inclusive): 5.4.0
Before (exclusive): 5.4.13
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
From (inclusive): 5.6.0
Before (exclusive): 5.6.11
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
From (inclusive): 6.0.0
Before (exclusive): 6.0.5
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://fortiguard.com/advisory/FG-IR-18-388
Mitigation · Vendor Advisory
- https://fortiguard.com/advisory/FG-IR-20-229
Vendor Advisory
- https://fortiguard.com/advisory/FG-IR-18-388
Mitigation · Vendor Advisory
- https://fortiguard.com/advisory/FG-IR-20-229
Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13383
US Government Resource