Unauthenticated redirection via unvalidated meeting-join URL
Published Sep 3, 2025 · Updated Sep 3, 2025
Open redirect in Cisco Webex Meetings allows remote attackers to redirect targeted users to attacker-controlled websites. The cloud service accepted a website URL in a specific meeting-join URL value without adequately validating the destination before redirecting the browser. Exploitation requires a targeted user to follow the crafted join URL; the redirect can lend credibility to a phishing site, but no direct data disclosure or service interruption is reported.
Summary
What happened
Open redirect in Cisco Webex Meetings allows remote attackers to redirect targeted users to attacker-controlled websites. The cloud service accepted a website URL in a specific meeting-join URL value without adequately validating the destination before redirecting the browser. Exploitation requires a targeted user to follow the crafted join URL; the redirect can lend credibility to a phishing site, but no direct data disclosure or service interruption is reported.
The record
- CVE
- CVE-2025-20291
- Published
- Sep 3, 2025
- Updated
- Sep 3, 2025
- Vendor
- ClamAV
- Product
- Webex Meetings
- Classifications
- CWE-601, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 3, 2025CVE publishedPublication date reported by the CVE source.
- Sep 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=N/A
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What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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