Samsung MagicINFO 9 Server Incorrect Default Permissions Local Privilege Escalation Vulnerability This issue affects MagicINFO 9 Server: less than 21.1091.1.

Successful exploitation of CVE-2026-25203 could allow an attacker to execute arbitrary code with elevated privileges on the affected system. This could lead to complete system compromise, data theft, or the installation of malicious software. The impact is particularly severe because privilege escalation allows an attacker to bypass normal security controls and gain control over the entire system. While the description doesn't specify a particular attack vector, the incorrect default permissions suggest a potential vulnerability in file system access or process execution.

Organizations utilizing Samsung MagicINFO 9 Server in their digital signage deployments are at risk. This includes businesses relying on the software for displaying information in retail environments, corporate lobbies, or other public spaces. Systems with default configurations or those not regularly patched are particularly vulnerable.

• linux / server:

journalctl -u magicinfo_server | grep -i permission

• linux / server:

lsof -p `pidof magicinfo_server` | grep -i /tmp

• linux / server:

find / -name 'magicinfo_server*' -type d -perm -002

1. 2026-04-10Disclosure

   disclosure

1. 已保留2026-01-30
2. 发布日期2026-04-10
3. 修改日期2026-04-14
4. EPSS 更新日期2026-04-17

The primary mitigation for CVE-2026-25203 is to upgrade Samsung MagicINFO 9 Server to version 21.1091.1 or later. If upgrading is not immediately possible due to compatibility issues or system downtime requirements, consider implementing stricter file system permissions and access controls to limit the potential impact of the vulnerability. Review and harden user account privileges to minimize the damage an attacker could inflict if they were to gain elevated access. After upgrading, verify the fix by attempting to execute a process with insufficient permissions and confirming that the attempt is denied.