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PatchSiren cyber security CVE debrief

CVE-2025-3928 Commvault CVE debrief

CVE-2025-3928 is an unspecified Commvault Web Server vulnerability that CISA added to the Known Exploited Vulnerabilities catalog on 2025-04-28. Because it is KEV-listed, defenders should treat it as an active-risk issue even though the supplied public record does not include a technical exploit description or CVSS score. The official guidance points administrators to apply vendor mitigations, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor
Commvault
Product
Web Server
CVSS
HIGH 8.8
CISA KEV
Listed
Original CVE published
2025-04-28
Original CVE updated
2025-04-28
Advisory published
2025-04-28
Advisory updated
2025-04-28

Who should care

Organizations running Commvault Web Server, especially security, infrastructure, backup/restore, and cloud service administrators responsible for patching and mitigation decisions.

Technical summary

The supplied sources identify CVE-2025-3928 only as a Commvault Web Server unspecified vulnerability. No CVSS score, exploit mechanics, or affected-version detail is included in the provided corpus. The most important signal available here is CISA KEV inclusion, which indicates confirmed exploitation in the wild or an exploitation risk significant enough to warrant cataloging. Public defenders should rely on the vendor advisory and CISA guidance for remediation steps.

Defensive priority

High. KEV inclusion makes this a time-sensitive remediation item regardless of the limited public technical description.

Recommended defensive actions

  • Review the Commvault security advisory and apply the vendor-recommended mitigations or update path.
  • Check whether any internet-facing or externally reachable Commvault Web Server deployments are in scope.
  • If mitigations are unavailable, follow CISA guidance to discontinue use of the product where feasible.
  • Track exposure against the KEV due date of 2025-05-19 and prioritize remediation before then.
  • Validate whether any compensating controls, access restrictions, or service isolation measures are in place until remediation is complete.

Evidence notes

Evidence in the supplied corpus is limited to official and authoritative records: the CVE is identified by CISA KEV as a Commvault Web Server unspecified vulnerability, added on 2025-04-28 with a due date of 2025-05-19. The source metadata also points to the vendor advisory and NVD record, but no additional technical details were provided in the corpus. No CVSS score was supplied.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-3928 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-3928

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-3928 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-3928

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.