How severe is CVE-2025-3928?

CVE-2025-3928 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2025-3928?

Affected package information for CVE-2025-3928 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-3928?

No fixed version has been published for CVE-2025-3928 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2025-3928 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-3928 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-3928?

CVE-2025-3928 has an EPSS (Exploit Prediction Scoring System) score of 28.6%, placing it in the 97th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2025-3928 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-3928 (Commvault Web Server Unspecified Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-04-28. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-05-19. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2025-3928?

CVE-2025-3928 affects commvault commvault. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2025-3928 published, and has it been updated?

CVE-2025-3928 was published on April 25, 2025 and was last updated on October 31, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2025-3928: Commvault (High 8.8)

EPSS Exploitation Probability

via FIRST.org ↗

28.6%probability of exploitation in next 30 days

Moderate Risk97th percentile+12.48%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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.

Affected Products

1 product · 4 configurations

Application

commvaultcommvault

≥ 11.36.0 && < 11.36.46

range

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

Is CVE-2025-3928 in your stack?

O3 detects CVE-2025-3928 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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