Information disclosure in Cisco Meeting Server
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
A vulnerability in the ability for guest users to join meetings via a hyperlink with Cisco Meeting Server could allow an authenticated, remote attacker to enter a meeting with a hyperlink URL, even though access should be denied. The vulnerability is due to the incorrect implementation of the configuration setting Guest access via hyperlinks, which should allow the administrative user to prevent guest users from using hyperlinks to connect to meetings. An attacker could exploit this vulnerability by using a crafted hyperlink to connect to a meeting. An exploit could allow the attacker to connect directly to the meeting with a hyperlink, even though access should be denied. The attacker would still require a valid hyperlink and encoded secret identifier to be connected. Cisco Bug IDs: CSCve20873.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Cisco Meeting Server | Cisco Meeting Server | — | No fix listed | CNA |
- Cisco Meeting Server Vendor— Affected Cisco Meeting Server Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-12224
- 2026-10-03 Alias added: GHSA-wq4v-hm3c-w6rg
References
More Cisco Meeting Server vulnerabilities
- TI-2016-05530 Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5 CVSS 3.0CRITICAL 9.8
- TI-2016-05529 Memory corruption in Cisco Meeting Server before 2.0.1, Acano Server before 1.9.3, Cisco… CVSS 3.0CRITICAL 9.8
- TI-2018-00239 Improper input validation in Cisco Meeting Server Media Services CVSS 3.0HIGH 7.5
- TI-2017-09025 Exposure of resource to wrong sphere in Cisco Meeting Server CVSS 3.0CRITICAL 9.1
- TI-2018-00222 A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote attacker… CVSS 3.0HIGH 8.1
- TI-2016-05527 Improper input validation in Cisco Meeting Server before 2.0.6 and Acano Server before… CVSS 3.0CRITICAL 9.1
Sources
- CVE-2017-12224 · CVE Program
- CVE-2017-12224 · NVD
- FIRST EPSS
- GHSA-wq4v-hm3c-w6rg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences