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CpanelApplication

CVE-2025-66429

HIGH · 8.8 CVSS v3.1 Published 2025-12-11
Fix available
A fix is available. Upgrade to 126.0.37 / 130.0.16 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An issue was discovered in cPanel 110 through 132. A directory traversal vulnerability within the Team Manager API allows for overwrite of an arbitrary file. This can allow for privilege escalation to the root user.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A directory traversal vulnerability in cPanel's Team Manager API (versions 110-132) allows authenticated attackers to write files to arbitrary filesystem locations, enabling privilege escalation to root through overwriting system files or configuration.

MitigationUpdate cPanel to version 133 or later per vendor release notes; restrict Team Manager API access to trusted administrators until patch is applied.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
CpanelApplication
Affected:>= 110.0.0, < 126.0.37>= 128.0.1, < 130.0.16>= 132.0.0, < 132.0.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed cPanel version
    Run `cat /usr/local/cpanel/version` or `whmapi1 version` to retrieve the installed cPanel version string
    Affected if The version output is within any of these ranges: 110.0.0 to 126.0.36, 128.0.1 to 130.0.15, or 132.0.0 to 132.0.3
  2. Verify version using RPM
    Run `rpm -q cpanel` to get the exact cPanel RPM version installed on the system
    Affected if The RPM version matches any of the affected version ranges listed above
  3. Confirm Team Manager API presence
    Check if the Team Manager API endpoint exists on the system by examining cPanel module directories or API documentation - the vulnerability exists in the Team Manager API regardless of whether it is actively used
    Affected if The Team Manager API component is present in the cPanel installation (this is a default component in affected versions)

If the installed cPanel version falls within any of the affected ranges (110.0.0-126.0.36, 128.0.1-130.0.15, or 132.0.0-132.0.3), the environment is vulnerable to this directory traversal flaw in the Team Manager API.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 126.0.37 / 130.0.16 / 132.0.4 or later
Fixed in 126.0.37130.0.16132.0.4
Interim mitigation

Update cPanel to version 133 or later per vendor release notes; restrict Team Manager API access to trusted administrators until patch is applied.

Recommended fix High confidence

Upgrade to cPanel version 126.0.37 or later (for 110.x), 130.0.16 or later (for 128.x), or 132.0.4 or later (for 132.x). Recommended: latest stable release (currently 132.x branch)

  1. 1. Log in to WHM as the root user
  2. 2. Navigate to 'cPanel' > 'Upgrade' or use the command line: /usr/local/cpanel/scripts/upcp
  3. 3. Run the cPanel update script to upgrade to the latest stable version
  4. 4. Alternatively, use: whmapi1 start_cpanel_upgrade or via SSH: /usr/local/cpanel/scripts/upcp --force
  5. 5. After upgrade completes, verify the version using: cat /usr/local/cpanel/version
  6. 6. Confirm the Team Manager API vulnerability is resolved by ensuring the version is 126.0.37 or higher in the 110.x track, 130.0.16 or higher in the 128.x track, or 132.0.4 or higher in the 132.x track
Caveat Review cPanel release notes for the target version for any configuration or API changes that may affect existing workflows

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Cpanel Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing3.0 h
  • Review / QA2.0 h
8.0 hours of engineering $1,390
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,224.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-66429 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data