CVE-2020-13617
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 · uneditedThe Web UI component of Mitel MiVoice 6800 and 6900 series SIP Phones with firmware before 5.1.0.SP5 could allow an unauthenticated attacker to expose sensitive information due to improper memory handling during failed login attempts.
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 · high confidenceMitel MiVoice 6800 and 6900 series SIP phones contain a vulnerability in their Web UI component where improper memory handling during failed login attempts allows unauthenticated attackers to access sensitive information. The flaw exists in firmware versions prior to 5.1.0.SP5 and is exploitable without authentication.
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<= 5.0= 5.1<= 5.0= 5.1<= 5.0= 5.1<= 5.0= 5.1<= 5.0= 5.1<= 5.0= 5.1<= 5.0= 5.1<= 5.0= 5.1CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify the phone modelAccess the phone's web interface and look for the model number in the status or about page, or check the physical device labelAffected if Model is one of: 6863, 6865, 6867, 6869, 6873, 6940, 6970, or 6930
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Check the firmware versionLog into the phone's web UI and navigate to the status or about page to view the firmware version, or access it via the phone's menuAffected if Firmware version is 5.0.x (any release) or 5.1.x (any release, including 5.1.0) - versions prior to 5.1.0.SP5 are affected
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Verify Web UI is enabledAttempt to reach the phone's web interface via HTTP or HTTPS using the phone's IP addressAffected if The Web UI responds and is accessible - the vulnerability exists in this component
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Check network exposure of the Web UIDetermine if the phone's IP and Web UI port (typically 80/443) are accessible from untrusted networks by reviewing firewall rules or network segmentationAffected if The Web UI is reachable from outside the trusted internal network without network restrictions
If the phone model is one of the affected 6800/6900 series and the firmware is version 5.0.x or 5.1.x with the Web UI exposed on the network, the environment is vulnerable to unauthensitive information disclosure.
Generated from the published advisory. Verify against your own configuration.
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 dataUpgrade Mitel MiVoice 6800/6900 series SIP phone firmware to version 5.1.0.SP5 or later to address the improper memory handling vulnerability. If immediate patching is not possible, restrict network access to the phone Web UI interfaces.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-13617 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-13617 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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