CVE-2025-22859: A Relative Path Traversal vulnerability [CWE-23] in FortiClientEMS 7.4.0 through 7.4.1 and FortiClientEMS Clou

Routine

MEDIUM 5.3REMOTEUPGRADEUPGRADE

CVE-2025-22859 is a medium-severity flaw (CVSS 5.3) affecting forticlientems, forticlientems cloud. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Relative Path Traversal vulnerability [CWE-23] in FortiClientEMS 7.4.0 through 7.4.1 and FortiClientEMS Cloud 7.4.0 through 7.4.1 may allow a remote unauthenticated attacker to perform a limited arbitrary file write on the system via upload requests.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-23
Published	2025-05-13
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

2025-05-13 15:15 UTCPublished CVE record published
2026-06-17 08:50 UTCUpdated Record last modified

fortinet forticlientems UPGRADE

Affected: >= 7.4.0 and < 7.4.3

Fixed in: 7.4.3

Safe to downgrade to: a release before 7.4.0

1. Check installed version

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

2. UPGRADE to 7.4.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade forticlientems

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 7.4.0 (Debian / Ubuntu)

apt-cache madison forticlientems sudo apt install forticlientems=<VERSION_BEFORE_7.4.0> sudo apt-mark hold forticlientems

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

dnf --showduplicates list forticlientems sudo dnf downgrade forticlientems-<VERSION_BEFORE_7.4.0> sudo dnf versionlock add forticlientems

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 forticlientems cloud UPGRADE

Affected: >= 7.4.0 and < 7.4.3

Fixed in: 7.4.3

Safe to downgrade to: a release before 7.4.0

1. Check installed version

apt-cache policy forticlientems-cloud || rpm -q forticlientems-cloud || forticlientems-cloud --version

2. UPGRADE to 7.4.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade forticlientems-cloud

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade forticlientems-cloud

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 7.4.0 (Debian / Ubuntu)

apt-cache madison forticlientems-cloud sudo apt install forticlientems-cloud=<VERSION_BEFORE_7.4.0> sudo apt-mark hold forticlientems-cloud

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

dnf --showduplicates list forticlientems-cloud sudo dnf downgrade forticlientems-cloud-<VERSION_BEFORE_7.4.0> sudo dnf versionlock add forticlientems-cloud

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-2025-22859?

forticlientems: upgrade to 7.4.3; forticlientems cloud: upgrade to 7.4.3. Exact commands for each OS are on this page.

Is CVE-2025-22859 being exploited?

CVE-2025-22859 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-2025-22859 affect?

CVE-2025-22859 affects forticlientems, forticlientems cloud. Severity is medium (CVSS 5.3). A Relative Path Traversal vulnerability [CWE-23] in FortiClientEMS 7.4.0 through 7.4.1 and FortiClientEMS Cloud 7.4.0 through 7.4.1 may allow a remote unauthenticated attacker to perform a limited arbitrary file write on the system via uplo

How urgent is CVE-2025-22859?

Priority 36/100. Remotely exploitable, no login, no user action

Software pages

Fortinet vulnerabilities

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References

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