Webex MeetingsApplication · Cisco
CVE-2020-3441
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 in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to view sensitive information from the meeting room lobby. This vulnerability is due to insufficient protection of sensitive participant information. An attacker could exploit this vulnerability by browsing the Webex roster. A successful exploit could allow the attacker to gather information about other Webex participants, such as email address and IP address, while waiting in the lobby.
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 information disclosure vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server allows unauthenticated attackers viewing the Webex roster to access sensitive participant information (email addresses, IP addresses) that should be protected while users wait in the meeting lobby.
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
Webex MeetingsApplication
<= 40.6.11<= 40.11.3
Webex Meetings ServerApplication
< 3.0= 3.0= 4.0CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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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Check Cisco Webex Meetings versionLocate the Webex Meetings version through the admin console, meeting site URL with '/version' appended, or by checking the installer package. Common access path: sign into Webex Administration site and view the site information or version page.Affected if Installed version is 40.6.11 or earlier, OR version 40.11.3 or earlier
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Check Cisco Webex Meetings Server versionAccess the Webex Meetings Server admin interface or check the version through the server's system information page. The version is typically visible in the admin dashboard or system settings.Affected if Installed version is 3.0, 4.0, or any version earlier than 3.0 (e.g., 2.x)
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Verify if meeting lobby feature is in useDetermine if the Webex site or meetings are configured to use the meeting lobby/waiting room feature where participants wait before being admitted. Check site settings or meeting templates for lobby enablement.Affected if Lobby or waiting room feature is enabled and participants can wait before being admitted to meetings
You are affected if your Cisco Webex Meetings is version 40.6.11 or earlier or 40.11.3 or earlier, OR your Cisco Webex Meetings Server is version 3.0, 4.0, or earlier than 3.0, AND the meeting lobby feature is enabled or in use.
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 data3.0
Apply the Cisco-provided patch/update for CVE-2020-3441 to all affected Webex Meetings and Webex Meetings Server deployments to enforce proper protection of participant information in the lobby.
Fix this in Webex Meetings
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3441 — 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-2020-3441 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