CVE-2017-6791

Name: CVE-2017-6791
Creator: NVD / NIST
Published: 2017-09-07T21:29:00.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.32%

Last modified Jun 17, 2026

CVE-2017-6791 is a vulnerability of currently unknown severity. 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. EPSS estimates a 2.32% chance of exploitation in the next 30 days.

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

EPSS Probability

2.32%

81.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Cisco	Unified Communications Manager	9.1\(2.10000.28\)
Cisco	Unified Communications Manager	10.0\(1.10000.24\)
Cisco	Unified Communications Manager	10.5\(2.10000.5\)
Cisco	Unified Communications Manager	11.0\(1.10000.10\)

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
Status: Modified

Frequently Asked Questions

What is CVE-2017-6791?

How severe is CVE-2017-6791?

Severity scoring for CVE-2017-6791 is pending analysis. The EPSS model estimates a 2.32% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6791?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6791?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST