Insufficient Session Expiration in FortiSandbox/Isolator <4.5 Enables Admin Session Hijack
CVE-2024-27779 Published on July 18, 2025
An insufficient session expiration vulnerability [CWE-613] in FortiSandbox FortiSandbox version 4.4.4 and below, version 4.2.6 and below, 4.0 all versions, 3.2 all versions and FortiIsolator version 2.4 and below, 2.3 all versions, 2.2 all versions, 2.1 all versions, 2.0 all versions, 1.2 all versions may allow a remote attacker in possession of an admin session cookie to keep using that admin's session even after the admin user was deleted.
Vulnerability Analysis
CVE-2024-27779 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
Insufficient Session Expiration
According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
Products Associated with CVE-2024-27779
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Affected Versions
Fortinet FortiSandbox:- Version 4.4.0, <= 4.4.4 is affected.
- Version 4.2.1, <= 4.2.6 is affected.
- Version 4.0.0, <= 4.0.6 is affected.
- Version 3.2.0, <= 3.2.4 is affected.
- Version 2.4.0, <= 2.4.4 is affected.
- Version 2.3.0, <= 2.3.4 is affected.
- Version 2.2.0 is affected.
- Version 2.1.0, <= 2.1.2 is affected.
- Version 2.0.0, <= 2.0.1 is affected.
- Version 1.2.0, <= 1.2.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.