Resource management flaw 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 · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
A vulnerability in the H.264 decoder function of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a Cisco Meeting Server media process to restart unexpectedly when it receives an illegal H.264 frame. The vulnerability is triggered by an H.264 frame that has an invalid picture parameter set (PPS) value. An attacker could exploit this vulnerability by sending a malformed H.264 frame to the targeted device. An exploit could allow the attacker to cause a denial of service (DoS) condition because the media process could restart. The media session should be re-established within a few seconds, during which there could be a brief interruption in service. Cisco Bug IDs: CSCvg12559.
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
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:meeting_server:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:meeting_server:2.1.0:*:*:*:*:*:*:* | 2.1.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:meeting_server:2.2.0:*:*:*:*:*:*:* | 2.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:meeting_server:2.3.0:*:*:*:*:*:*:* | 2.3.0 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:meeting_server:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:meeting_server:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:meeting_server:2.2.0:*:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:meeting_server:2.3.0:*:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-12311
- 2026-10-03 Alias added: GHSA-f723-86qq-j5cv
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-2017-12311 · CVE Program
- CVE-2017-12311 · NVD
- FIRST EPSS
- GHSA-f723-86qq-j5cv · 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