CVE-2017-6791

mediumpriority · track · 31EPSS 0.023 · 83 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.32% (83rd) EPSS

CVSS 5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119US

affected products (5)

Products and version ranges known to be affected.

n/a Cisco Unified Communications Manager≤ Cisco Unified Communications Managerenisa_euvdEU
cisco unified communications manager= 10.0(1.10000.24)nvdUScpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
cisco unified communications manager= 10.5(2.10000.5)nvdUScpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
cisco unified communications manager= 11.0(1.10000.10)nvdUScpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
cisco unified communications manager= 9.1(2.10000.28)nvdUScpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2017-09-07modified 2026-06-17

references (13)

External citations — patches, advisories, analysis.

scry

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