CVE WatchOct 8, 2026

CVE-2025-3928

Commvault Web Server Unspecified Vulnerability

CVSS

8.8

High

EPSS

2.5%

p84

KEV

YES

Apr 28, 2025

Exploit Today

0-100

Published: Apr 25, 2025 · Last modified: Oct 8, 2026 · CWE-94

EPSS · 30d

2.1%EPSS · 30 days2.5%

2026-09-172026-10-14

KEV catalog record

Product

Commvault / Web Server

Vulnerability

Commvault Web Server Unspecified Vulnerability

Added to KEV

Apr 28, 2025

Remediate by

May 19, 2025

Known ransomware use

Summary description

Commvault Web Server contains an unspecified vulnerability that allows a remote, authenticated attacker to create and execute webshells.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://documentation.commvault.com/securityadvisories/CV_2025_03_1.html; https://www.commvault.com/blogs/notice-security-advisory-update; https://nvd.nist.gov/vuln/detail/CVE-2025-3928

Technical description

Commvault Web Server has an unspecified vulnerability that can be exploited by a remote, authenticated attacker. According to the Commvault advisory: "Webservers can be compromised through bad actors creating and executing webshells." Fixed in version 11.36.46, 11.32.89, 11.28.141, and 11.20.217 for Windows and Linux platforms. This vulnerability was added to the CISA Known Exploited Vulnerabilities (KEV) Catalog on 2025-04-28.

Official references

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