CVE-2024-33507Network attack vector

Admin deauthentication and privilege escalation via crafted cookies

Published Oct 14, 2025 · Updated Oct 14, 2025

Improper session handling in Fortinet FortiIsolator 2.3.0 through 2.4.4 allows attackers to disrupt admin sessions or gain write privileges. The GUI authentication mechanism accepts crafted cookie state without properly expiring sessions or enforcing read-only authorization. Remote attackers can deauthenticate logged-in administrators without credentials, while remote authenticated users with read-only access can obtain write privileges.

CVSS severity7.4
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper session handling in Fortinet FortiIsolator 2.3.0 through 2.4.4 allows attackers to disrupt admin sessions or gain write privileges. The GUI authentication mechanism accepts crafted cookie state without properly expiring sessions or enforcing read-only authorization. Remote attackers can deauthenticate logged-in administrators without credentials, while remote authenticated users with read-only access can obtain write privileges.

The record

CVE
CVE-2024-33507
Published
Oct 14, 2025
Updated
Oct 14, 2025
Vendor
Fortinet
Product
FortiIsolator
Classifications
CWE-613, CWE-863, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=2.3.0 <=2.3.4
  2. Affected versionversion=2.4.0 <=2.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiIsolatorversion=2.3.0 <=2.3.4; version=2.4.0 <=2.4.4

Published CVSS scores

7.4FortinetCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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-613Insufficient Session Expiration
CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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