CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2018-13383: Fortinet FortiOS and FortiProxy Out-of-bounds Write

criticalknown exploitedCVE-2018-13383
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation 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

vendor: Fortinetproduct: FortiOSRemote code execution
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.

⚡ Watch FortiOS

Get an email when a new FortiOS advisory drops — max one per day, one-click unsubscribe.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-01-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-13383

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-13383coverage & exploitation statusNVD · CVE.org

Recent advisories for Fortinet FortiOS and

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CISA Known Exploited Vulnerabilities