CVE-2025-3928
Commvault Web Server Unspecified Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 19 May 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 2.53% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 28 April 2025 · due 19 May 2025
- Weakness
- CWE-94
- Affected
- commvault/commvault
- Source
- 9119a7d8-5eab-497f-8521-727c672e3725
EPSS 2.5% since 30 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. 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
References
- https://documentation.commvault.com/securityadvisories/CV_2025_03_1.htmlVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-3928Third Party Advisory, US Government Resource
- https://www.cisa.gov/news-events/alerts/2025/05/22/advisory-update-cyber-threat-activity-targeting-commvaults-saas-cloud-application-metallicThird Party Advisory, US Government Resource
- https://www.commvault.com/blogs/customer-security-updateVendor Advisory
- https://www.commvault.com/blogs/notice-security-advisory-updateBroken Link, Vendor Advisory
- https://www.commvault.com/blogs/security-advisory-march-7-2025Vendor Advisory
- https://www.bleepingcomputer.com/news/security/commvault-says-recent-breach-didnt-impact-customer-backup-data/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3928US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.