CVE-2024-27779: An insufficient session expiration vulnerability [CWE-613] in FortiSandbox FortiSandbox version 4.4.4 and belo

Routine

MEDIUM 6.7UPGRADEUPGRADE

CVE-2024-27779 is a medium-severity flaw (CVSS 6.7) affecting fortiisolator, fortisandbox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-613
Published	2025-07-18
Last modified	2026-06-17

Publisher (CNA): Fortinet, Inc. · Vendor: fortinet

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-07-18 08:15 UTCPublished CVE record published
2026-06-17 07:20 UTCUpdated Record last modified

fortinet fortiisolator UPGRADE

Affected: >= 1.2.0 and < 2.4.5

Fixed in: 2.4.5

Safe to downgrade to: a release before 1.2.0

1. Check installed version

apt-cache policy fortiisolator || rpm -q fortiisolator || fortiisolator --version

2. UPGRADE to 2.4.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fortiisolator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fortiisolator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.2.0 (Debian / Ubuntu)

apt-cache madison fortiisolator sudo apt install fortiisolator=<VERSION_BEFORE_1.2.0> sudo apt-mark hold fortiisolator

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fortiisolator sudo dnf downgrade fortiisolator-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add fortiisolator

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

fortinet fortisandbox UPGRADE

Affected: >= 3.2.0 and < 4.2.7 · >= 4.4.0 and < 4.4.5

Fixed in: 4.2.7, 4.4.5

Safe to downgrade to: a release before 3.2.0

1. Check installed version

apt-cache policy fortisandbox || rpm -q fortisandbox || fortisandbox --version

2. UPGRADE to 4.2.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fortisandbox

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fortisandbox

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.2.0 (Debian / Ubuntu)

apt-cache madison fortisandbox sudo apt install fortisandbox=<VERSION_BEFORE_3.2.0> sudo apt-mark hold fortisandbox

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fortisandbox sudo dnf downgrade fortisandbox-<VERSION_BEFORE_3.2.0> sudo dnf versionlock add fortisandbox

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-27779?

fortiisolator: upgrade to 2.4.5; fortisandbox: upgrade to 4.2.7, 4.4.5. Exact commands for each OS are on this page.

Is CVE-2024-27779 being exploited?

CVE-2024-27779 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-27779 affect?

CVE-2024-27779 affects fortiisolator, fortisandbox. Severity is medium (CVSS 6.7). 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

How urgent is CVE-2024-27779?

Priority 35/100. No elevated risk signals yet.

Software pages

Fortinet vulnerabilities

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References

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