CVE-2025-3928
Published: April 28, 2025
Official Description
Commvault Web Server contains an unspecified vulnerability that allows a remote, authenticated attacker to create and execute webshells.
CISA KEV Advisory
Commvault Web Server Unspecified Vulnerability
Commvault Web Server contains an unspecified vulnerability that allows a remote, authenticated attacker to create and execute webshells.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Risk Analysis
An unspecified vulnerability in Commvault Web Server allows a remote, authenticated attacker to create and execute webshells. The high EPSS score and confirmed exploitation indicate this is an actively exploited vulnerability that could lead to persistent access and control.
This vulnerability is actively exploited in the wild and is listed in CISA's KEV catalog. While it requires authentication, its remote exploitability and ability to create webshells make it a severe threat.
Apply the latest security updates for Commvault Web Server to address this vulnerability. Implement strong authentication policies and regularly audit user accounts and permissions to prevent unauthorized access.
Technical Analysis
CVE-2025-3928 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2025-3928 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (3)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-3928 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1