Zero-day vulnerability in Commvault

Input validation error
CVE-2025-3928

Vulnerability details

Advisory: SB2025042852 - Remote code execution in Commvault Web Server

Vulnerable component: Commvault

CVE-ID: CVE-2025-3928

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-20 - Improper input validation

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an unspecified vulnerability in the Commvault Web Server. A remote non-authenticated attacker can send specially crafted request to the server and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://documentation.commvault.com/securityadvisories/CV_2025_03_1.html#impacted-products


About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.