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CVE-2024-54019VulnerabilityPublished

CVE-2024-54019: Fortinet FortiClientWindows · Improper Access Control

Affects Fortinet FortiClientWindowsSource CVE Database V5

0

Not known to be exploited · CVSS 4.4 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
4.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:W/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Fortinet FortiClientWindowsAffected
  • =7.4.0
  • =7.2.0
  • =7.0.0
Fixed in–

AI-suggested

In the interim, organizations should enforce strict DNS security measures, such as deploying DNSSEC validation and using trusted DNS resolvers to reduce the risk of DNS spoofing. Network segmentation and monitoring for unusual VPN connection patterns can help detect potential redirection attempts. Additionally, implementing multi-factor authentication (MFA) on VPN access can reduce the impact of intercepted credentials. Organizations should also educate users about the risks of connecting to untrusted networks and encourage the use of secure, encrypted DNS protocols like DoH or DoT. Finally, network administrators should review VPN server certificate configurations to ensure strict hostname verification policies are enforced wherever possible.

Description

A improper validation of certificate with host mismatch in Fortinet FortiClientWindows version 7.4.0, versions 7.2.0 through 7.2.6, and 7.0 all versions allow an unauthorized attacker to redirect VPN connections via DNS spoofing or another form of redirection.

References

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