CVE-2018-13383
Actively exploited. CVE-2018-13383 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-10) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
A heap buffer overflow in Fortinet FortiOS and FortiProxy may cause the SSL VPN web service termination for logged in users.
CSIRTS triage
- What
- A heap buffer overflow may cause the SSL VPN web service termination for logged in users.
- Who is affected
- Deployments of FortiOS and FortiProxy with SSL VPN enabled.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest patches provided by Fortinet.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 98% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2018-13383: Fortinet FortiOS and FortiProxy Out-of-bounds Writecisa-kev · 2022-01-10
External references
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