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CpanelApplication

CVE-2016-10770

MEDIUM · 6.5 CVSS v3.0 Published 2019-08-05
Fix available
A fix is available. Upgrade to 11.54.0.33 / 56.0.39 or later.
See remediation →
71/100
Remediation priority · Elevated
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
cPanel before 60.0.25 allows arbitrary file-overwrite operations during a Roundcube update (SEC-164).

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

cPanel before version 60.0.25 contains a vulnerability during the Roundcube webmail update process that allows arbitrary file-overwrite operations. This flaw could permit an attacker with appropriate access to overwrite system files, potentially leading to privilege escalation or service disruption.

MitigationUpdate cPanel to version 60.0.25 or later to patch the arbitrary file overwrite vulnerability in the Roundcube update mechanism.

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:>= 11.54.0.0, < 11.54.0.33>= 55.9999.61, < 56.0.39>= 57.9999.48, < 58.0.37>= 59.9999.58, < 60.0.25

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
None
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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. Determine installed cPanel version
    Run the command 'cpversion' or check /usr/local/cpanel/version'
    Affected if The version falls within any of these ranges: 11.54.0.0 to 11.54.0.32, 55.9999.61 to 56.0.38, 57.9999.48 to 58.0.36, or 59.9999.58 to 60.0.24'
  2. Verify Roundcube webmail is installed
    Check if Roundcube is enabled in cPanel via WHM under 'Service Configuration' > 'Mailserver Configuration' or by checking for /usr/local/cpanel/base/3rdparty/roundcube directory
    Affected if Roundcube webmail interface is present and active on the server'
  3. Confirm update mechanism is accessible
    Verify the cPanel update system is accessible by checking /usr/local/cpanel/bin/upcp or reviewing update logs in /var/cpanel/updatelogs/
    Affected if The cPanel update system (upcp) is present and functional on the server'

A server is affected if it runs a cPanel version within the vulnerable ranges AND has Roundcube webmail enabled, as the vulnerability exists in the Roundcube update process within cPanel.

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.

From vendor data
Upgrade available Upgrade to 11.54.0.33 / 56.0.39 / 58.0.37 or later
Fixed in 11.54.0.3356.0.3958.0.37
Interim mitigation

Update cPanel to version 60.0.25 or later to patch the arbitrary file overwrite vulnerability in the Roundcube update mechanism.

Fix this in Cpanel Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

Scan for this in your stack

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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-2016-10770 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