Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since January 10, 2022.
CVE-2018-13383
Fortinet FortiOS and FortiProxy Out-of-bounds Write vulnerability
Fortinet · FortiOS and FortiProxy
Added to KEV January 10, 2022
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2018-13383
- CWE
- CWE-787
- Affected products
- FortiOS and FortiProxy · Fortinet FortiOS and FortiProxy · Fortinet
What happened
A heap buffer overflow in Fortinet FortiOS and FortiProxy may cause the SSL VPN web service termination for logged in users.
What it means for your business
Fortinet FortiOS and FortiProxy is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2018-13383). A heap buffer overflow in Fortinet FortiOS and FortiProxy may cause the SSL VPN web service termination for logged in users. CISA remediation due date: 2022-07-10. If you need help checking exposure, call (864) 335-9223.
Required action
Apply updates per vendor instructions.
CISA due date: July 10, 2022
Sources
Related briefs
Microsoft PowerShell Security Feature Bypass vulnerability
Microsoft PowerShell Security Feature Bypass vulnerability (CVE-2026-70338) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Microsoft Windows Cross Device Service Elevation of Privilege vulnerability
Microsoft Windows Cross Device Service Elevation of Privilege vulnerability (CVE-2026-66804) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Windows iSCSI Target Service Remote Code Execution vulnerability
Windows iSCSI Target Service Remote Code Execution vulnerability (CVE-2026-65791) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Apple macOS Improper Authentication Vulnerability
Apple macOS is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-65400). Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network to authenticate to Screen Sharing without valid credentials. CISA remediation due date: 2026-08-21. If you need help checking exposure, call (864) 335-9223.
Need help patching?
PremierePC monitors KEV alerts for managed clients and helps teams prioritize remediation before attackers do.