CVE-2018-9193 — A researcher has disclosed several vulnerabilities against FortiClient for Windo

A researcher has disclosed several vulnerabilities against FortiClient for Windows version 6.0.5 and below, version 5.6.6, the combination of these vulnerabilities can turn into an exploit chain, which allows a user to gain system privileges on Microsoft Windows.

01What is this vulnerability?

A researcher has disclosed several vulnerabilities against FortiClient for Windows version 6.0.5 and below, version 5.6.6, the combination of these vulnerabilities can turn into an exploit chain, which allows a user to gain system privileges on Microsoft Windows.

02Affected products

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-05-30T16:27:54.000Z
• Last modified: 2025-03-24T15:43:31.634Z

09References

• fortiguard.com — https://fortiguard.com/advisory/FG-IR-18-108