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CVE-2023-44255: An exposure of sensitive information to an unauthorized actor [CWE-200] in Fortinet FortiManager before 7.4.2,

26
Routine
MEDIUM 4.1UPGRADEUPGRADEUPGRADE

CVE-2023-44255 is a medium-severity flaw (CVSS 4.1) affecting fortianalyzer, fortianalyzer big data, fortimanager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exposure of sensitive information to an unauthorized actor [CWE-200] in Fortinet FortiManager before 7.4.2, FortiAnalyzer before 7.4.2 and FortiAnalyzer-BigData before 7.2.5 may allow a privileged attacker with administrative read permissions to read event logs of another adom via crafted HTTP or HTTPs requests.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score4.1 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance0.6% (top 54%)
CISA exploited listNo
WeaknessCWE-359
Published2024-11-12
Last modified2026-06-17
Publisher (CNA): Fortinet, Inc. · Vendor: fortinet

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

Am I affected?

Timeline

fortinet fortianalyzer UPGRADE
Affected: >= 6.2.0 and < 7.4.3
Fixed in: 7.4.3
Safe to downgrade to: a release before 6.2.0
1. Check installed version
apt-cache policy fortianalyzer || rpm -q fortianalyzer || fortianalyzer --version
2. UPGRADE to 7.4.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade fortianalyzer
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade fortianalyzer
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 6.2.0 (Debian / Ubuntu)
apt-cache madison fortianalyzer sudo apt install fortianalyzer=<VERSION_BEFORE_6.2.0> sudo apt-mark hold fortianalyzer
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list fortianalyzer sudo dnf downgrade fortianalyzer-<VERSION_BEFORE_6.2.0> sudo dnf versionlock add fortianalyzer
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 fortianalyzer big data UPGRADE
Affected: >= 6.2.1 and < 7.2.6
Fixed in: 7.2.6
Safe to downgrade to: a release before 6.2.1
1. Check installed version
apt-cache policy fortianalyzer-big-data || rpm -q fortianalyzer-big-data || fortianalyzer-big-data --version
2. UPGRADE to 7.2.6 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade fortianalyzer-big-data
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade fortianalyzer-big-data
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 6.2.1 (Debian / Ubuntu)
apt-cache madison fortianalyzer-big-data sudo apt install fortianalyzer-big-data=<VERSION_BEFORE_6.2.1> sudo apt-mark hold fortianalyzer-big-data
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list fortianalyzer-big-data sudo dnf downgrade fortianalyzer-big-data-<VERSION_BEFORE_6.2.1> sudo dnf versionlock add fortianalyzer-big-data
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 fortimanager UPGRADE
Affected: >= 6.2.0 and < 7.4.3
Fixed in: 7.4.3
Safe to downgrade to: a release before 6.2.0
1. Check installed version
apt-cache policy fortimanager || rpm -q fortimanager || fortimanager --version
2. UPGRADE to 7.4.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade fortimanager
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade fortimanager
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 6.2.0 (Debian / Ubuntu)
apt-cache madison fortimanager sudo apt install fortimanager=<VERSION_BEFORE_6.2.0> sudo apt-mark hold fortimanager
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list fortimanager sudo dnf downgrade fortimanager-<VERSION_BEFORE_6.2.0> sudo dnf versionlock add fortimanager
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-2023-44255?

fortianalyzer: upgrade to 7.4.3; fortianalyzer big data: upgrade to 7.2.6; fortimanager: upgrade to 7.4.3. Exact commands for each OS are on this page.

Is CVE-2023-44255 being exploited?

CVE-2023-44255 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-2023-44255 affect?

CVE-2023-44255 affects fortianalyzer, fortianalyzer big data, fortimanager. Severity is medium (CVSS 4.1). An exposure of sensitive information to an unauthorized actor [CWE-200] in Fortinet FortiManager before 7.4.2, FortiAnalyzer before 7.4.2 and FortiAnalyzer-BigData before 7.2.5 may allow a privileged attacker with administrative read permis

How urgent is CVE-2023-44255?

Priority 26/100. No elevated risk signals yet.

Software pages

Fortinet vulnerabilities

Related CVEs

References

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