Webex MeetingsApplication · Cisco
CVE-2025-20250
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 could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. A vulnerability is due to improper filtering of user-supplied input. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to conduct a cross-site scripting attack against the targeted user.
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 confidenceA cross-site scripting (XSS) vulnerability exists in Cisco Webex due to improper filtering of user-supplied input. An unauthenticated, remote attacker can exploit this by tricking a user into clicking a malicious link, allowing arbitrary script execution in the user's browser context.
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
all versionsCVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 Webex Meetings usageReview your organization's installed applications, software inventory, or SSO/identity provider integrations to confirm Cisco Webex Meetings is deployed or integrated.Affected if Cisco Webex Meetings is in use by the organization or its users.
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Check for Webex browser extensions or add-onsInspect installed browser extensions in Chrome (chrome://extensions), Firefox (about:addons), or Edge (edge://extensions) for Cisco Webex-related plugins.Affected if A Cisco Webex browser extension is installed and enabled.
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Review Webex web application accessCheck browser history or proxy logs for access to webex.com, webexmeetings.com, or related Cisco Webex domains.Affected if Users access the Cisco Webex web interface.
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Identify integrated Webex featuresExamine collaboration tools, calendar integrations (Outlook), or unified communications platforms that may embed Cisco Webex Meeting functionality.Affected if Webex meeting functionality is embedded in other enterprise applications.
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Assess user email/communication channelsReview email security logs or web proxy logs for incoming emails or links referencing Cisco Webex meeting invitations.Affected if Users receive Webex meeting invitations via email or other channels.
If Cisco Webex Meetings is deployed, integrated, or used in any capacity within the organization, the environment is affected since all versions are vulnerable to this XSS flaw.
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 Cisco's official patch when available; until then, users should avoid clicking untrusted links and organizations can implement Content Security Policy (CSP) headers to mitigate XSS impact.
Fix this in Webex Meetings
Scoped from the published advisory
- Consultation3.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,720.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-20250 — 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-2025-20250 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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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.
- 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