CVE-2021-47903 - CVE House

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Status published High CVE-2021-47903

LiteSpeed Web Server Enterprise 5.4.11 - Command Injection

8.6 CVSS

Vulnerability Description

LiteSpeed Web Server Enterprise 5.4.11 contains an authenticated command injection vulnerability in the external app configuration interface. Authenticated administrators can inject shell commands through the 'Command' parameter in the server configuration, allowing remote code execution via path traversal and bash command injection.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

cmOs - SunCSR

References

Affected Vendor

LiteSpeed Technologies Inc

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Affected Software

LiteSpeed Web Server Enterprise

Vulnerable Versions:

5.4.11

Timeline

Official Publish: January 23rd, 2026

Last Modified: July 15th, 2026

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1059 Command and Scripting Interpreter

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1005 Data from Local System

T1041 Exfiltration Over C2 Channel