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Actively exploited

CVE-2025-34028 Commvault Command Center Path Traversal Vulnerability

Commvault Command Center contains a path traversal vulnerability that allows a remote, unauthenticated attacker to execute arbitrary code.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 2 May 2025.
  • Rated Critical severity (CVSS 9.3, scored by Vendor).
  • It has been in the catalogue for 553 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

The Commvault Command Center Innovation Release allows an unauthenticated actor to upload ZIP files that represent install packages that, when expanded by the target server, are vulnerable to path traversal vulnerability that can result in Remote Code Execution via malicious JSP. This issue affects Command Center Innovation Release: 11.38.0 to 11.38.20. The vulnerability is fixed in 11.38.20 with SP38-CU20-433 and SP38-CU20-436 and also fixed in 11.38.25 with SP38-CU25-434 and SP38-CU25-438.

Affected Versions

ProductVersions
Commvault Command Center Innovation Release11.38.0 to 11.38.25

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Commvault Command Center. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 23 May 2025 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Commvault Flaws

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CVE-2025-3928Commvault Web Server Unspecified VulnerabilityAdded 28 Apr 2025

All 2 exploited Commvault vulnerabilities

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2025-34028
  3. CVE record: CVE-2025-34028
  4. FIRST EPSS
  5. documentation.commvault.com/securityadvisories/CV_2025_04_1.html
  6. labs.watchtowr.com/fire-in-the-hole-were-breaching-the-vault-commvault-remote-code-execution-cve-202
  7. github.com/watchtowrlabs/watchTowr-vs-Commvault-PreAuth-RCE-CVE-2025-34028
  8. vulncheck.com/advisories/commvault-command-center-innovation-release-unauthenticated-install-package