High 8.8Known exploited (CISA KEV)Published Apr 25, 2025

CVE-2025-3928Commvault Web Server unspecified vulnerability

Updated under an hour ago (Oct 26, 2026, 1:50 PM ET)

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It affects Commvault Web Server and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Apr 28, 2025; federal agencies had to remediate by May 19, 2025. Treat that date as your deadline.

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Every CVE for Commvault Web Server

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94
Known exploited: Added to CISA KEV Apr 28, 2025; federal remediation due May 19, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 2.48% (percentile 84)
Assigned by: cisa-cg
NVD analysis: Analyzed
Record last updated: Oct 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Commvault Web Server commvault:web_server (from the name)	from 11.36.0 before 11.36.46; 11.36.46 not affected; from 11.32.0 before 11.32.89; 11.32.89 not affected; from 11.28.0 before 11.28.141; 11.28.141 not affected; from 11.20.0 before 11.20.217; 11.20.217 not affected	CNA record
commvault commvault commvault:commvault	from 11.20.0 before 11.20.217; from 11.28.0 before 11.28.141; from 11.32.0 before 11.32.89; from 11.36.0 before 11.36.46	NVD

References

References

https://documentation.commvault.com/securityadvisories/CV_2025_03_1.html	vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-3928	third-party-advisory, us-government-resource
https://www.commvault.com/blogs/security-advisory-march-7-2025	vendor-advisory
https://www.commvault.com/blogs/notice-security-advisory-update	broken-link, vendor-advisory
https://www.cisa.gov/news-events/alerts/2025/05/22/advisory-update-cyber-threat-activity-targeting-commvaults-saas-cloud-application-metallic	third-party-advisory, us-government-resource
https://www.commvault.com/blogs/customer-security-update	vendor-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-2025-3928	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.