CVE DatabaseCVE-2023-48788

Updated 2026-06-17한국어 권고문 →

CVE-2023-487889.8/CRITICALCISA KEVCWE-89

Fortinet FortiClientEMS SQL Injection Remote Code Execution (RCE) Vulnerability Advisory (CVE-2023-48788)

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Affected Vendors

fortinet

Affected Components

forticlientems

Published Date

2024-03-12

CVSS v3.1

9.8

CRITICAL

EPSS (30d)

98.5%

FIRST.org

CISA KEV

Exploited

NVD Source ↗

Executive & SecOps Summary

SECOPS ASSESSMENT

Affected Scope

Fortinet FortiClientEMS versions 7.2.0 through 7.2.2, and 7.0.1 through 7.0.10

Impact

An unauthenticated remote attacker can execute unauthorized code or system commands with database server privileges via specially crafted packets, leading to complete system compromise

Mitigation

Immediately upgrade FortiClientEMS to patched versions (7.2.3+ or 7.0.11+) and restrict access to the management ports

Affected Products & Version Scope

Fortinet FortiClientEMS 7.2.0 through 7.2.2 (Resolved in 7.2.3 and higher) FortiClientEMS 7.0.1 through 7.0.10 (Resolved in 7.0.11 and higher)

Remediation & Live Workaround Commands

PATCH & WORKAROUND

1. Official Patch & Version Upgrade Commands

Apply the official security updates immediately. Download the appropriate installer from the Fortinet Support Portal and perform the upgrade.

To verify the current installation and service status on the Windows Server hosting FortiClientEMS, run the following PowerShell commands:

powershell

# Check FortiClientEMS daemon service status and version
Get-Service -Name 'FCEMSDaemon' | Select-Object DisplayName, Status
Get-ItemProperty -Path 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object { $_.DisplayName -like '*FortiClientEMS*' } | Select-Object DisplayName, DisplayVersion

2. Temporary Workaround & Hardening Configuration

If immediate patching is not feasible, restrict network access to the FortiClientEMS port (default TCP 8013) using firewalls, allowing connections only from trusted administrator networks or internal subnets.

bash

# Example: Restrict access to TCP port 8013 using iptables on a gateway/firewall
# Allow trusted subnet (e.g., 192.168.10.0/24) and drop all other traffic
iptables -A INPUT -p tcp -s 192.168.10.0/24 --dport 8013 -j ACCEPT
iptables -A INPUT -p tcp --dport 8013 -j DROP

3. Log Audit & IoC Verification Commands

Inspect the database execution logs and Windows Event Logs for unauthorized activation of 'xp_cmdshell' or anomalous child processes spawned by the SQL Server process (sqlservr.exe).

powershell

# Detect anomalous child processes spawned by the MSSQL Server process
Get-CimInstance Win32_Process | Where-Object {
    $_.ParentProcessId -in (Get-Process -Name 'sqlservr' -ErrorAction SilentlyContinue).Id
} | Select-Object ProcessId, Name, CommandLine, CreationDate | Format-Table -AutoSize

Interactive SecOps Remediation Checklist

0/4 (0%)

Recommended Security Control & Mitigation Partner

NordLayer / Zero-Trust Network Access

Due to active in-the-wild exploitation, immediately upgrade FortiClientEMS to version 7.2.3, 7.0.11, or higher.

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Technical Root Cause & Exploitation Mechanics

1. Vulnerability Overview & Root Cause

This vulnerability (CVE-2023-48788) is a critical SQL injection flaw in Fortinet FortiClientEMS (Enterprise Management Server). The root cause lies in the improper neutralization of special elements used in SQL commands within a specific daemon process handling client communications (CWE-89). Due to the lack of input validation and parameterized queries, user-supplied input is directly concatenated into SQL statements and executed on the backend database.

2. Exploitation Mechanics & Attack Scenario

An attacker exploits this vulnerability by sending specially crafted network packets to the FortiClientEMS listening port (default TCP 8013). The malicious SQL payload embedded in the packet is executed by the backend Microsoft SQL Server (MSSQL). If the database connection account possesses sufficient privileges, the attacker can leverage database features such as the 'xp_cmdshell' extended stored procedure to execute arbitrary operating system commands under the context of the database service account (typically SYSTEM).

3. Infrastructure & Business Impact

FortiClientEMS is a centralized management console responsible for endpoint security, VPN, and ZTNA policies. With a CVSS score of 9.8 and its inclusion in the CISA KEV catalog, this vulnerability is actively exploited in the wild. Successful exploitation allows attackers to gain full control over the EMS server, enabling them to compromise connected endpoints, exfiltrate sensitive data, deploy ransomware, and pivot deeper into the internal corporate network.

Official Vendor Advisories & References

NVD Original English Description

A improper neutralization of special elements used in an sql command ('sql injection') in Fortinet FortiClientEMS version 7.2.0 through 7.2.2, FortiClientEMS 7.0.1 through 7.0.10 allows attacker to execute unauthorized code or commands via specially crafted packets.

https://fortiguard.com/psirt/FG-IR-24-007

Source: psirt@fortinet.com · Vendor Advisory

https://fortiguard.com/psirt/FG-IR-24-007

Source: af854a3a-2127-422b-91ae-364da2661108 · Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-48788

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 · US Government Resource

Frequently Asked SecOps Questions (CVE-2023-48788)

FAQ

Q1. How critical is CVE-2023-48788 and is it actively exploited in the wild?

CVE-2023-48788 is rated CVSS 9.8 (CRITICAL) with a 30-day EPSS exploitation probability of 98.5%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.

Q2. Which vendors and products are affected by CVE-2023-48788?

Primary impacted vendors include fortinet across forticlientems. Scope summary: Fortinet FortiClientEMS 7.2.0 through 7.2.2 (Resolved in 7.2.3 and higher) FortiClientEMS 7.0.1 through 7.0.10 (Resolved in 7.0.11 and higher)

Q3. What temporary mitigations or workarounds exist for CVE-2023-48788 before patching?

[Mitigation] Immediately upgrade FortiClientEMS to patched versions (7.2.3+ or 7.0.11+) and restrict access to the management ports Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.

SECOPS WORKBENCH INTEGRATION