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Ip Phone 8800 Series FirmwareOperating system · Cisco

CVE-2016-1403

HIGH · 7.8 CVSS v3.0 Published 2016-06-04
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
CISCO IP 8800 phones with software 11.0.1 and earlier allow local users to gain privileges for OS command execution via crafted CLI commands, aka Bug ID CSCuz03005.

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

Local privilege escalation vulnerability in Cisco IP 8800 phones running software 11.0.1 and earlier allows authenticated local users to execute OS commands with elevated privileges through crafted CLI commands.

MitigationUpgrade Cisco IP 8800 phone firmware to a version newer than 11.0.1 once Cisco releases a patch; restrict physical and CLI access to trusted personnel only until the update 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
Ip Phone 8800 Series FirmwareOperating system
Affected:= 10.2\(1\)= 10.2\(2\)= 10.3= 10.3\(2\)= 11.0\(1\)

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. Identify the device model
    Check the device label or access the phone's web interface or console to confirm it is a Cisco IP 8800 Series phone (such as 8811, 8841, 8851, 8861, etc.)
    Affected if Device is not a Cisco IP 8800 Series phone, then not affected
  2. Check installed firmware version
    Access the phone's web interface under Help > About, or use the phone keypad to navigate to Settings > Model Information > Software Version, or run 'show version' via console/Telnet/SSH if CLI access is enabled
    Affected if Firmware version is 10.2(1), 10.2(2), 10.3, 10.3(2), or 11.0(1)
  3. Verify CLI access is enabled
    Check if Telnet, SSH, or console access is configured on the phone. This can be done via the phone's web interface under Network Setup > Telnet/SSH settings, or by attempting to connect to the phone's IP on port 23 (Telnet) or 22 (SSH)
    Affected if CLI access (Telnet/SSH/console) is enabled and the device has an IP address reachable from the attacker

Device is affected if it is a Cisco IP 8800 Series phone running firmware version 10.2(1), 10.2(2), 10.3, 10.3(2), or 11.0(1) and CLI access is available.

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

Upgrade Cisco IP 8800 phone firmware to a version newer than 11.0.1 once Cisco releases a patch; restrict physical and CLI access to trusted personnel only until the update is applied.

Fix this in Ip Phone 8800 Series Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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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-2016-1403 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