CVE-2024-36506Network attack vector

Unauthenticated trusted-host bypass via session connection

Published Jan 14, 2025 · Updated Jan 15, 2025

Improper communication-source verification in Fortinet FortiClient EMS allows remote attackers to bypass trusted-host restrictions. Fortinet has not disclosed how the session-connection handler fails to validate the peer source before enforcing the trusted-host rule. The affected sets are 6.4.0 through 6.4.4, 6.4.7 through 6.4.9, 7.0.0 through 7.0.13, 7.2.0 through 7.2.4, and 7.4.0; no prior privileges are required, but exploitation has high complexity and weakens only integrity.

CVSS severity5.3
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper communication-source verification in Fortinet FortiClient EMS allows remote attackers to bypass trusted-host restrictions. Fortinet has not disclosed how the session-connection handler fails to validate the peer source before enforcing the trusted-host rule. The affected sets are 6.4.0 through 6.4.4, 6.4.7 through 6.4.9, 7.0.0 through 7.0.13, 7.2.0 through 7.2.4, and 7.4.0; no prior privileges are required, but exploitation has high complexity and weakens only integrity.

The record

CVE
CVE-2024-36506
Published
Jan 14, 2025
Updated
Jan 15, 2025
Vendor
Fortinet
Product
FortiClient EMS
Classifications
CWE-940
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.0 <=6.4.4
  2. Affected versionversion=6.4.7 <=6.4.9
  3. Affected versionversion=7.0.0 <=7.0.13
  4. Affected versionversion=7.2.0 <=7.2.4
  5. Affected versionversion=7.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiClient EMSversion=6.4.0 <=6.4.4; version=6.4.7 <=6.4.9; version=7.0.0 <=7.0.13; version=7.2.0 <=7.2.4; version=7.4.0

Published CVSS scores

3.7FortinetCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-940Improper Verification of Source of a Communication Channel

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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