CVE-2021-1517: cisco cisco webex meetings server Protection Mechanism Failure
Vulnerability summary
CVE-2021-1517 is a medium (CVSS 5.0) Protection Mechanism Failure vulnerability in cisco cisco webex meetings server. EPSS estimates a 0.83% chance of exploitation in the next 30 days, higher than 56.6% of scored vulnerabilities.
Timeline
- 04-06-2021PublishedVulnerability first disclosed.
- 07-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the multimedia viewer feature of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an authenticated, remote attacker to bypass security protections. This vulnerability is due to unsafe handling of shared content within the multimedia viewer feature. An attacker could exploit this vulnerability by sharing a file through the multimedia viewer feature. A successful exploit could allow the attacker to bypass security protections and prevent warning dialogs from appearing before files are offered to other users.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.83%
Chance of exploitation in the next 30 days
Percentile
57%
Versus all other CVEs
30-day change
0.00 pp
From 0.83% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco3 products
- cisco webex meetings servern/a
- webex_meetings_online41.3.5
- webex_meetings_server< 3.0 | 3.0 | 3.0:maintenance_release1 | 3.0:maintenance_release2 | 3.0:maintenance_release3 | 4.0 | 4.0:maintenance_release1 | 4.0:maintenance_release2 | 4.0:maintenance_release3 | 4.0:maintenance_release3_security_patch3 | 4.0:maintenance_release3_security_patch4
1 vendor · 3 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-multimedia-26DpqVROVendor AdvisoryX Refsource CISCO