Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2017-6779

Multiple Cisco products are affected by a vulnerability in local file management for certain system log files of Cisco collaboration products that could allow an unauthenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability occurs because a certain system log file does not have a maximum size restriction. Therefore, the file is allowed to consume the majority of available disk space on the appliance. An attacker could exploit this vulnerability by sending crafted remote connection requests to the appliance. Successful exploitation could allow the attacker to increase the size of a system log file so that it consumes most of the disk space. The lack of available disk space could lead to a DoS condition in which the application functions could operate abnormally, making the appliance unstable. This vulnerability affects the following Cisco Voice Operating System (VOS)-based products: Emergency Responder, Finesse, Hosted Collaboration Mediation Fulfillment, MediaSense, Prime License Manager, SocialMiner, Unified Communications Manager (UCM), Unified Communications Manager IM and Presence Service (IM&P - earlier releases were known as Cisco Unified Presence), Unified Communication Manager Session Management Edition (SME), Unified Contact Center Express (UCCx), Unified Intelligence Center (UIC), Unity Connection, Virtualized Voice Browser. This vulnerability also affects Prime Collaboration Assurance and Prime Collaboration Provisioning. Cisco Bug IDs: CSCvd10872, CSCvf64322, CSCvf64332, CSCvi29538, CSCvi29543, CSCvi29544, CSCvi29546, CSCvi29556, CSCvi29571, CSCvi31738, CSCvi31741, CSCvi31762, CSCvi31807, CSCvi31818, CSCvi31823.

  • Published: Jun 7, 2018
  • Updated: Nov 9, 2025
  • CVE: CVE-2017-6779
  • Severity: High
  • Exploit:

CVSS v2:

  • Severity: High
  • Score: 7.8
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
Software From Fixed in
cisco / emergency_responder 10.5 10.5\(1a\)
cisco / emergency_responder 11.0 11.5\(4\)
cisco / emergency_responder 12.0 12.0su1
cisco / emergency_responder 11.0(1.10000.10) 11.0(1.10000.10).x
cisco / finesse 9.5(1) 9.5(1).x
cisco / finesse 11.5 11.5\(3\)
cisco / hosted_collaboration_mediation_fulfillment 11.5 11.5\(3\)
cisco / hosted_collaboration_mediation_fulfillment 9.5(1) 9.5(1).x
cisco / mediasense 9.5(1) 9.5(1).x
cisco / mediasense 11.5 11.5su2
cisco / prime_collaboration_assurance 11.6 11.6_es16
cisco / prime_collaboration_assurance 12.1 12.1_es2
cisco / prime_collaboration_provisioning 12.5 12.5.x
cisco / prime_license_manager 10.5 10.5.2
cisco / prime_license_manager 11.0 11.5\(1\)su5
cisco / socialminer 11.6 11.6.1
cisco / unified_communications_manager 11.0(1.10000.10) 11.0(1.10000.10).x
cisco / unified_communications_manager 11.5(1.10000.6) 11.5(1.10000.6).x
cisco / unified_communications_manager 10.5(2.10000.5) 10.5(2.10000.5).x
cisco / unified_communications_manager 12.0 12.0.x
cisco / unified_communications_manager 10.0 10.5\(2\)su5
cisco / unified_communications_manager 11.0 11.0\(1a\)su4
cisco / unified_communications_manager 11.5 11.5\(1\)su3
cisco / unified_contact_center_express 9.0(2)su1.3 9.0(2)su1.3.x
cisco / unified_contact_center_express 11.6 11.6\(1\)
cisco / unified_intelligence_center 9.5(1) 9.5(1).x
cisco / unified_intelligence_center 11.6 11.6\(1\)
cisco / unity_connection 12.0 12.0.x
cisco / unity_connection 9.5(0.9)tt0 9.5(0.9)tt0.x
cisco / unity_connection 10.5 10.5su5
cisco / unity_connection 11.0 11.5.1su3
cisco / virtualized_voice_browser 11.6 11.6\(1\)

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.