CVE-2024-31967
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 · uneditedA vulnerability on Mitel 6800 Series and 6900 Series SIP Phones through 6.3 SP3 HF4, 6900w Series SIP Phone through 6.3.3, and 6970 Conference Unit through 5.1.1 SP8 allows an unauthenticated attacker to conduct an unauthorized access attack due to improper access control. A successful exploit could allow an attacker to gain unauthorized access to user information or the system configuration.
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 confidenceAn improper access control vulnerability in Mitel 6800/6900 Series SIP phones and 6970 Conference Units allows unauthenticated attackers to bypass authentication and gain unauthorized access to user information or system configuration via the phone's management interface.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify Mitel SIP phone models in your environmentReview your network device inventory or physically check the phones for the model number (6800 Series, 6900 Series, or 6970 Conference Unit)Affected if Any Mitel 6800/6900 Series SIP phones or 6970 Conference Units are present
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Check the firmware version of affected devicesAccess the phone's web management interface and navigate to Status or System Information page to view the firmware version, or check via the device's provisioning/management systemAffected if The firmware version is older than 6.3 SP3 HF4 for 6800/6900 Series, older than 6.3.3 for 6900w Series, or older than 5.1.1 SP8 for 6970 Conference Units
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Determine if the management interface is network-accessibleCheck network segmentation and firewall rules to see if the phone management ports (typically HTTP/HTTPS on the phone IP) are reachable from untrusted networks or the internetAffected if The phone management interface is exposed to networks outside the trusted internal network
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Verify if default or weak authentication is in useAttempt to access the management interface without credentials or with default credentials to confirm whether authentication can be bypassed (this is a limited check and should be done in a test environment)Affected if Unauthenticated access to user information or system configuration is possible
You are affected if you have any Mitel 6800/6900 Series SIP phones or 6970 Conference Units running firmware versions older than the fixed releases AND their management interfaces are accessible from untrusted networks.
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.
dbcve · scopedApply vendor-supplied firmware patches (6.3 SP3 HF4 for 6800/6900 Series, 6.3.3 for 6900w Series, 5.1.1 SP8 for 6970 Conference Unit) and implement network segmentation to restrict access to SIP phone management interfaces.
Firmware versions beyond 6.3 SP3 HF4 (6800/6900), 6.3.3 (6900w), and 5.1.1 SP8 (6970) - contact Mitel for specific fixed releases
- Identify the specific Mitel phone model (6800 Series, 6900 Series, 6900w Series, or 6970 Conference Unit) in your environment
- Check the current firmware version running on each device
- For 6800/6900 Series SIP Phones: Upgrade to a version higher than 6.3 SP3 HF4
- For 6900w Series SIP Phone: Upgrade to a version higher than 6.3.3
- For 6970 Conference Unit: Upgrade to a version higher than 5.1.1 SP8
- After upgrade, verify the fix by confirming the firmware version is patched
- Test that the device still functions correctly for SIP communications
- If available, apply any additional security configurations recommended by Mitel
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-31967 — 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-2024-31967 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