CVE-2017-6791

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

A vulnerability in the Trust Verification Service (TVS) of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of Transport Layer Security (TLS) traffic by the affected software. An attacker could exploit this vulnerability by generating incomplete traffic streams. A successful exploit could allow the attacker to deny access to the TVS for an affected device, resulting in a DoS condition, until an administrator restarts the service. Known Affected Releases 10.0(1.10000.24) 10.5(2.10000.5) 11.0(1.10000.10) 9.1(2.10000.28). Cisco Bug IDs: CSCux21905.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-119

Affected software

Vendor	Product	Versions
n/a	Cisco Unified Communications Manager	Cisco Unified Communications Manager

References

http://www.securityfocus.com/bid/100662Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039286Third Party Advisory, VDB Entry
https://quickview.cloudapps.cisco.com/quickview/bug/CSCux21905Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ucmVendor Advisory
http://www.securityfocus.com/bid/100662Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039286Third Party Advisory, VDB Entry
https://quickview.cloudapps.cisco.com/quickview/bug/CSCux21905Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ucmVendor Advisory

Timeline

Published: Sep 7, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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