dbcve.org
Hybrid Media ServiceApplication · Cisco

CVE-2016-6470

HIGH · 7.8 CVSS v3.0 Published 2016-12-14
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
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
A vulnerability in the installation procedure of the Cisco Hybrid Media Service could allow an authenticated, local attacker to elevate privileges to the root level. More Information: CSCvb81344. Known Affected Releases: 1.0.

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 local privilege escalation vulnerability exists in Cisco Hybrid Media Service 1.0's installation procedure. An authenticated, local attacker can exploit improper privilege handling during installation to elevate their privileges from the authenticated user level to root.

MitigationApply the vendor patch (CSCvb81344) when available from Cisco. Until then, restrict physical and local console access to systems where this software is installed to prevent unauthorized local users from running the installation.

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
Hybrid Media ServiceApplication
Affected:= 1.0_base

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
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/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. Confirm Cisco Hybrid Media Service 1.0 installation
    Search for Cisco Hybrid Media Service in installed programs or check for its installation directory. On Linux, check /opt/cisco/hybrid-media-service or similar paths. On Windows, check Programs and Features or registry under HKLM\Software\Cisco.
    Affected if Cisco Hybrid Media Service version 1.0_base is installed on the system
  2. Identify installation-related files and permissions
    Locate installation scripts, binaries, or configuration files for Cisco Hybrid Media Service. Check file ownership and permissions using 'ls -la' on Linux or icacls on Windows. Look for world-writable files in the installation directory.
    Affected if Installation files are owned by root but writable by non-privileged users, or if permissions allow authenticated users to modify installation components
  3. Check for recent installation activity
    Review system logs (auth.log, syslog, Windows Event Viewer) for installation events related to Cisco Hybrid Media Service. Check for new processes spawned during installation that may retain elevated privileges.
    Affected if Installation logs or process history shows privilege handling issues or processes running as root initiated by non-root users
  4. Verify user privileges on the system
    Identify local authenticated users on the system. Check if any non-privileged users have been granted execute permissions on installation scripts or tools.
    Affected if Non-privileged authenticated users have write or execute access to installation components that should require root privileges

A user is affected if Cisco Hybrid Media Service 1.0_base is installed and authenticated local users can access or manipulate the installation procedure without proper privilege controls.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor patch (CSCvb81344) when available from Cisco. Until then, restrict physical and local console access to systems where this software is installed to prevent unauthorized local users from running the installation.

Fix this in Hybrid Media Service Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
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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-2016-6470 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