Improper input validation in Cisco Meeting Server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
A vulnerability in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) 2.1.4 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected application does not properly validate Fragmentation Unit (FU-A) protocol packets. An attacker could exploit this vulnerability by sending a crafted H.264 FU-A packet through the affected application. A successful exploit could allow the attacker to cause a DoS condition on the affected system due to an unexpected restart of the CMS media process on the system. Although the CMS platform continues to operate and only the single, affected CMS media process is restarted, a brief interruption of media traffic for certain users could occur. Cisco Bug IDs: CSCve10131.
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-2017-6763
- 2026-10-03 Alias added: GHSA-5rrp-wchw-8jv4
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-2017-6763 · CVE Program
- CVE-2017-6763 · NVD
- FIRST EPSS
- GHSA-5rrp-wchw-8jv4 · 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