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CVE-2017-6753

Affected software4 products, listed below
Severity8.8 High CVSS 3.0 2 scores
WeaknessBuffer errors (CWE-119)
Published25 Jul 2017
Updated17 Jun 2026

Description

A vulnerability in Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server, Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center), and Cisco WebEx Meetings when they are running on Microsoft Windows. The vulnerability is due to a design defect in the extension. An attacker who can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser. The following versions of the Cisco WebEx browser extensions are affected: Versions prior to 1.0.12 of the Cisco WebEx extension on Google Chrome, Versions prior to 1.0.12 of the Cisco WebEx extension on Mozilla Firefox. Cisco Bug IDs: CSCvf15012 CSCvf15020 CSCvf15030 CSCvf15033 CSCvf15036 CSCvf15037.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 9 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 6.0% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

8.8 HIGH v3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.0 8.8 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H NVD Primary published
CVSS 2.0 9.3 none AV:N/AC:M/Au:N/C:C/I:C/A:C NVD Primary

Affected software and releases

Products and versions

20 products, 63 version entries
SourceVendorProductSchemeAffected versions
nvd cisco webex event center generic t30_base · t31_base · t32_base
nvd cisco webex meeting center generic t30_base · t31_base · t32_base
nvd cisco webex meetings generic t30_base
nvd cisco webex meetings server generic 1.1_base · 1.5_base · 1.5.1.6 · 1.5.1.131 · 2.0_base · 2.0.1.107 · 2.5_base · 2.5.1.5 · 2.5.1.29 · 2.5.99.2 · 2.6.0 · 2.6.1.39 · 2.7_base · 2.7.1 · 2.8_base
nvd cisco webex meetings server 2.0 generic mr2 · mr3 · mr4 · mr5 · mr6 · mr7 · mr8 · mr9
nvd cisco webex meetings server 2.0 mr8 patch generic 1
nvd cisco webex meetings server 2.0 mr9 patch generic 1 · 2 · 3
nvd cisco webex meetings server 2.5 generic mr1 · mr2 · mr3 · mr4 · mr5 · mr6
nvd cisco webex meetings server 2.5 mr2 patch generic 1
nvd cisco webex meetings server 2.5 mr5 patch generic 1
nvd cisco webex meetings server 2.5 mr6 patch generic 1 · 2 · 3 · 4
nvd cisco webex meetings server 2.6 generic mr1 · mr2 · mr3
nvd cisco webex meetings server 2.6 mr1 patch generic 1
nvd cisco webex meetings server 2.6 mr2 patch generic 1
nvd cisco webex meetings server 2.6 mr3 patch generic 1 · 2
nvd cisco webex meetings server 2.7 generic mr1 · mr2
nvd cisco webex meetings server 2.7 mr1 patch generic 1
nvd cisco webex meetings server 2.7 mr2 patch generic 1
nvd cisco webex support center generic t30_base · t31_base · t32_base
nvd cisco webex training center generic t30_base · t31_base · t32_base

References

URLTags
http://www.securityfocus.com/bid/99614 Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038909 Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038910 Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038911 Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170717-webex Vendor Advisory

Timeline

Published2017-07-25By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.