Webex Meetings OnlineApplication · Cisco
CVE-2022-20763
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 the login authorization components of Cisco Webex Meetings could allow an authenticated, remote attacker to inject arbitrary Java code. This vulnerability is due to improper deserialization of Java code within login requests. An attacker could exploit this vulnerability by sending malicious login requests to the Cisco Webex Meetings service. A successful exploit could allow the attacker to inject arbitrary Java code and take arbitrary actions within the Cisco Webex Meetings application.
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 confidenceInsecure deserialization vulnerability in Cisco Webex Meetings login authorization components allows authenticated attackers to inject arbitrary Java code via malicious login requests. The vulnerability stems from improper validation of deserialized Java objects in the authentication flow.
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 Meetings OnlineApplication
= wbs42.2.1-1CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify the Webex Meetings versionAccess the Webex Meetings administration console or check the installed software package version. For Webex Meetings Online, this is typically visible in the account settings or meeting site URL.Affected if The installed version is exactly wbs42.2.1-1
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Confirm deployment is Webex Meetings OnlineDetermine whether the deployment is Cisco Webex Meetings Online (cloud-hosted) versus Webex Meetings Server (on-premises). Check the product type in the license or administration portal.Affected if The deployment is Cisco Webex Meetings Online and the version matches wbs42.2.1-1
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Verify login authorization components are in useConfirm that the Webex login endpoint is accessible and active. This is the component where the deserialization vulnerability exists.Affected if Login authorization for Webex Meetings Online is enabled and accessible
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Review authentication logs for suspicious activityExamine Webex Meeting authentication and audit logs for unexpected deserialization errors, unusual login request patterns, or evidence of injection attempts.Affected if Logs show deserialization errors or anomalous login requests targeting the authorization flow
The environment is affected if running Cisco Webex Meetings Online version wbs42.2.1-1 with the login authorization feature enabled.
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 dataApply vendor-supplied patches from Cisco for Webex Meetings; upgrade to patched versions. If patches unavailable, consider compensating controls such as network segmentation and enhanced monitoring of login endpoints.
Fix this in Webex Meetings Online
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20763 — 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-2022-20763 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
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