CVE-2025-3928
HighExploitedPublic exploitCommvault Web Server has an unspecified vulnerability that can be exploited by a remote, authenticated attacker.
Published Apr 25, 2025 · Updated Oct 8, 2026
Key Facts
Patch immediately- CVE-2025-3928 is a high-severity vulnerability (CVSS 8.7 v4) affecting Commvault, Web Server.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 7, 2025. Public exploit code is available.
- EPSS estimates a 2.5% probability of exploitation in the next 30 days.
- Fixed versions are available, including Commvault 11.20.217, Commvault 11.28.141, Commvault 11.32.89.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
8.7
CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (30-day exploit likelihood)
2.5%
Higher than 84.3% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-3928 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Apr 28, 2025 | May 19, 2025 | Not reported |
| Industry KEV feed | Mar 7, 2025 | May 19, 2025 | Not reported |
| CIRCL KEV | Apr 28, 2025 | May 19, 2025 | Not reported |
| ENISA EUVD | Apr 28, 2025 | n/a | Not reported |
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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| CommvaultCommvault | See advisory | 11.20.217 |
| Web Server | >= 11.36.0 | 11.36.46 |
Patched Releases
Commvault
11.20.217, 11.28.141, 11.32.89, 11.36.46
Web Server
11.20.217, 11.28.141, 11.32.89, 11.36.46
Timeline
Added to Industry KEV feed
Mar 7, 2025
Publicly disclosed
Apr 25, 2025
Added to CISA KEV
Apr 28, 2025
Added to CIRCL KEV
Apr 28, 2025
Added to ENISA EUVD
Apr 28, 2025
Last updated
Oct 8, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- advisoryurl
- advisoryhttps://www.bleepingcomputer.com/news/security/commvault-says-recent-breach-didnt-impact-customer-backup-data/
- advisoryurl
- advisoryurl
- advisoryurl
FAQ
Common Questions.
Commvault Web Server has an unspecified vulnerability that can be exploited by a remote, authenticated attacker.
Affected: Commvault; Web Server versions >= 11.36.0. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 7, 2025.
Yes. It was added on Apr 28, 2025 with a federal remediation due date of May 19, 2025.
Public exploit code is available.
Fixed versions are available, including Commvault 11.20.217, Commvault 11.28.141, Commvault 11.32.89.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2025-3928 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo