Vulnerability in Commvault Web Server

CVE-2025-3928

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." Fixe…

EPSS: 0.286 (96.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-3928?
CVE-2025-3928 is a high-severity vulnerability in Commvault Web Server, classified under CWE-NOINFO NOT ENOUGH INFORMATION. CVSS score: 8.8/10. Published 2025-04-25.
How severe is CVE-2025-3928?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-3928 known to be exploited?
Yes. CVE-2025-3928 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-04-28), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.