Improper input validation in Cisco Webex Meetings Multimedia Viewer
CVE-2020-3126
vulnerability within the Multimedia Viewer feature of Cisco Webex Meetings could allow an authenticated, remote attacker to bypass security protections. The vulnerability is due to missing security warning dialog boxes when a room host views shared multimedia files. An authenticated, remote attacker could exploit this vulnerability by using the host role to share files within the Multimedia sharing feature and convincing a former room host to view that file. A warning dialog normally appears cautioning users before the file is displayed; however, the former host would not see that warning dialog, and any shared multimedia would be rendered within the user's browser. The attacker could leverage this behavior to conduct additional attacks by including malicious files within a targeted room host's browser window.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.0 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (57.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Cisco Webex Meetings Multimedia Viewer — versions T39.3
- Cisco Webex Meetings Server — versions t39.3
Weakness classification (CWE)
References
- quickview.cloudapps.cisco.com/quickview/bug/CSCvs24436 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3126?
- CVE-2020-3126 is a low-severity vulnerability in Cisco Webex Meetings Multimedia Viewer, classified under Improper Access Control. CVSS score: 3.0/10. Published 2020-04-13.
- How severe is CVE-2020-3126?
- Low severity. CVSS v3 base score is 3.0 out of 10.