Memory corruption in Cisco WebEx Browser Extension
Priority MEDIUM 47CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.05951 93rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Cisco WebEx Browser Extension | Cisco WebEx Browser Extension | — | No fix listed | CNA |
- Cisco WebEx Browser Extension Vendor— Affected Cisco WebEx Browser Extension Fixed in — No fix listed CNA
CPE configurations NVD · 63
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:webex_event_center:t30_base:*:*:*:*:*:*:* | t30_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_event_center:t31_base:*:*:*:*:*:*:* | t31_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_event_center:t32_base:*:*:*:*:*:*:* | t32_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meeting_center:t30_base:*:*:*:*:*:*:* | t30_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meeting_center:t31_base:*:*:*:*:*:*:* | t31_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meeting_center:t32_base:*:*:*:*:*:*:* | t32_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:t30_base:*:*:*:*:*:*:* | t30_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:1.1_base:*:*:*:*:*:*:* | 1.1_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:1.5.1.6:*:*:*:*:*:*:* | 1.5.1.6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:1.5.1.131:*:*:*:*:*:*:* | 1.5.1.131 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:webex_event_center:t30_base:*:*:*:*:*:*:* Versions t30_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_event_center:t31_base:*:*:*:*:*:*:* Versions t31_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_event_center:t32_base:*:*:*:*:*:*:* Versions t32_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meeting_center:t30_base:*:*:*:*:*:*:* Versions t30_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meeting_center:t31_base:*:*:*:*:*:*:* Versions t31_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meeting_center:t32_base:*:*:*:*:*:*:* Versions t32_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:t30_base:*:*:*:*:*:*:* Versions t30_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:1.1_base:*:*:*:*:*:*:* Versions 1.1_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:1.5.1.6:*:*:*:*:*:*:* Versions 1.5.1.6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:1.5.1.131:*:*:*:*:*:*:* Versions 1.5.1.131 Vulnerable ·Cisco
Show 53 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:webex_meetings_server:1.5_base:*:*:*:*:*:*:* | 1.5_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.0.1.107:*:*:*:*:*:*:* | 2.0.1.107 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.0_base:*:*:*:*:*:*:* | 2.0_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.5.1.5:*:*:*:*:*:*:* | 2.5.1.5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.5.1.29:*:*:*:*:*:*:* | 2.5.1.29 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.5.99.2:*:*:*:*:*:*:* | 2.5.99.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.5_base:*:*:*:*:*:*:* | 2.5_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.6.0:*:*:*:*:*:*:* | 2.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.6.1.39:*:*:*:*:*:*:* | 2.6.1.39 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.7.1:*:*:*:*:*:*:* | 2.7.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.7_base:*:*:*:*:*:*:* | 2.7_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:2.8_base:*:*:*:*:*:*:* | 2.8_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr2:*:*:*:*:*:*:* | mr2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr3:*:*:*:*:*:*:* | mr3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr4:*:*:*:*:*:*:* | mr4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr5:*:*:*:*:*:*:* | mr5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr6:*:*:*:*:*:*:* | mr6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr7:*:*:*:*:*:*:* | mr7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr8:*:*:*:*:*:*:* | mr8 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0:mr9:*:*:*:*:*:*:* | mr9 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0_mr8_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0_mr9_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0_mr9_patch:2:*:*:*:*:*:*:* | 2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.0_mr9_patch:3:*:*:*:*:*:*:* | 3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5:mr1:*:*:*:*:*:*:* | mr1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5:mr2:*:*:*:*:*:*:* | mr2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5:mr3:*:*:*:*:*:*:* | mr3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5:mr4:*:*:*:*:*:*:* | mr4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5:mr5:*:*:*:*:*:*:* | mr5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5:mr6:*:*:*:*:*:*:* | mr6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5_mr2_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5_mr5_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:2:*:*:*:*:*:*:* | 2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:3:*:*:*:*:*:*:* | 3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:4:*:*:*:*:*:*:* | 4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6:mr1:*:*:*:*:*:*:* | mr1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6:mr2:*:*:*:*:*:*:* | mr2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6:mr3:*:*:*:*:*:*:* | mr3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6_mr1_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6_mr2_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6_mr3_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.6_mr3_patch:2:*:*:*:*:*:*:* | 2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.7:mr1:*:*:*:*:*:*:* | mr1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.7:mr2:*:*:*:*:*:*:* | mr2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.7_mr1_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server_2.7_mr2_patch:1:*:*:*:*:*:*:* | 1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_support_center:t30_base:*:*:*:*:*:*:* | t30_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_support_center:t31_base:*:*:*:*:*:*:* | t31_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_support_center:t32_base:*:*:*:*:*:*:* | t32_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_training_center:t30_base:*:*:*:*:*:*:* | t30_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_training_center:t31_base:*:*:*:*:*:*:* | t31_base | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_training_center:t32_base:*:*:*:*:*:*:* | t32_base | Vulnerable | Cisco |
- cpe:2.3:a:cisco:webex_meetings_server:1.5_base:*:*:*:*:*:*:* Versions 1.5_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.0.1.107:*:*:*:*:*:*:* Versions 2.0.1.107 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.0_base:*:*:*:*:*:*:* Versions 2.0_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.5.1.5:*:*:*:*:*:*:* Versions 2.5.1.5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.5.1.29:*:*:*:*:*:*:* Versions 2.5.1.29 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.5.99.2:*:*:*:*:*:*:* Versions 2.5.99.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.5_base:*:*:*:*:*:*:* Versions 2.5_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.6.0:*:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.6.1.39:*:*:*:*:*:*:* Versions 2.6.1.39 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.7.1:*:*:*:*:*:*:* Versions 2.7.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.7_base:*:*:*:*:*:*:* Versions 2.7_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:2.8_base:*:*:*:*:*:*:* Versions 2.8_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr2:*:*:*:*:*:*:* Versions mr2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr3:*:*:*:*:*:*:* Versions mr3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr4:*:*:*:*:*:*:* Versions mr4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr5:*:*:*:*:*:*:* Versions mr5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr6:*:*:*:*:*:*:* Versions mr6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr7:*:*:*:*:*:*:* Versions mr7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr8:*:*:*:*:*:*:* Versions mr8 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0:mr9:*:*:*:*:*:*:* Versions mr9 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0_mr8_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0_mr9_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0_mr9_patch:2:*:*:*:*:*:*:* Versions 2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.0_mr9_patch:3:*:*:*:*:*:*:* Versions 3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5:mr1:*:*:*:*:*:*:* Versions mr1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5:mr2:*:*:*:*:*:*:* Versions mr2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5:mr3:*:*:*:*:*:*:* Versions mr3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5:mr4:*:*:*:*:*:*:* Versions mr4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5:mr5:*:*:*:*:*:*:* Versions mr5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5:mr6:*:*:*:*:*:*:* Versions mr6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5_mr2_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5_mr5_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:2:*:*:*:*:*:*:* Versions 2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:3:*:*:*:*:*:*:* Versions 3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.5_mr6_patch:4:*:*:*:*:*:*:* Versions 4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6:mr1:*:*:*:*:*:*:* Versions mr1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6:mr2:*:*:*:*:*:*:* Versions mr2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6:mr3:*:*:*:*:*:*:* Versions mr3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6_mr1_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6_mr2_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6_mr3_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.6_mr3_patch:2:*:*:*:*:*:*:* Versions 2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.7:mr1:*:*:*:*:*:*:* Versions mr1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.7:mr2:*:*:*:*:*:*:* Versions mr2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.7_mr1_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server_2.7_mr2_patch:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_support_center:t30_base:*:*:*:*:*:*:* Versions t30_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_support_center:t31_base:*:*:*:*:*:*:* Versions t31_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_support_center:t32_base:*:*:*:*:*:*:* Versions t32_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_training_center:t30_base:*:*:*:*:*:*:* Versions t30_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_training_center:t31_base:*:*:*:*:*:*:* Versions t31_base Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_training_center:t32_base:*:*:*:*:*:*:* Versions t32_base Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6753
- 2026-10-03 Alias added: GHSA-j6hm-qxwv-3jwr
References
More Cisco Webex Event Center vulnerabilities
- TI-2019-12027 Cisco WebEx Centers Username Enumeration Information Disclosure Vulnerability CVSS 3.1MEDIUM 5.3
- TI-2014-01742 meetinginfo.do in Cisco WebEx Event Center, WebEx Meeting Center, WebEx Sales Center… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2017-6753 · CVE Program
- CVE-2017-6753 · NVD
- FIRST EPSS
- GHSA-j6hm-qxwv-3jwr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences