What is the CVSS score of CVE-2025-63261?

CVE-2025-63261 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

How to fix or mitigate CVE-2025-63261?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Validate that input sanitization is in place for all user-controlled parameters.

CVE-2025-63261

EUVD-2025-208911 HIGH

OS Command Injection (CWE-78)

2026-03-20 mitre

Command Injection

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 20, 2026 - 20:30 euvd

EUVD-2025-208911

Analysis Generated

Mar 20, 2026 - 20:30 vuln.today

CVE Published

Mar 20, 2026 - 00:00 nvd

HIGH 7.8

DescriptionCVE.org

AWStats 8.0 is vulnerable to Command Injection via the open function

AnalysisAI

AWStats 8.0 contains a command injection vulnerability in the open function that allows attackers to execute arbitrary system commands. The vulnerability affects the AWStats web analytics application, and attackers can exploit this flaw to achieve remote code execution on systems running vulnerable versions. A proof-of-concept has been documented in the referenced pentest-tools PDF, indicating practical exploitability.

Technical ContextAI

AWStats is a Perl-based web server log analysis tool that processes log files through CGI scripts. The vulnerability exists in the awstats.pl script within the open function, which likely fails to properly sanitize or validate input parameters before passing them to system command execution routines. This is a classic command injection vulnerability (CWE class) where untrusted user input is concatenated into shell commands without proper escaping or validation. The Perl open function, when used improperly with user-controlled data, can interpret shell metacharacters and execute arbitrary commands with the privileges of the web server process.

RemediationAI

Immediately upgrade AWStats to the latest patched version available from the official GitHub repository (https://github.com/eldy/AWStats). If an immediate patch is unavailable, implement strict input validation and sanitization for all user-supplied parameters passed to the open function, ensuring shell metacharacters are properly escaped or rejected. As an interim measure, restrict access to the awstats.pl CGI script using web server access controls (IP whitelisting, authentication), disable the CGI script entirely if not actively in use, and run the web server with minimal privileges to limit the blast radius of code execution. Consider deploying a Web Application Firewall (WAF) with rules to detect and block command injection payloads targeting AWStats endpoints. Monitor system logs and process execution for suspicious activity originating from the web server process.