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Medium severity5.4NVD Advisory· Published Jan 13, 2021· Updated Jun 17, 2026

CVE-2021-1311

CVE-2021-1311

Description

A vulnerability in the reclaim host role feature of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an authenticated, remote attacker to take over the host role during a meeting. This vulnerability is due to a lack of protection against brute forcing of the host key. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Webex Meetings Server site. A successful exploit would require the attacker to have access to join a Webex meeting, including applicable meeting join links and passwords. A successful exploit could allow the attacker to acquire or take over the host role for a meeting.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

14
  • Cisco Systems, Inc./Webex Meetings2 versions
    cpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:*range: <40.12.0
    • (no CPE)
  • Cisco Systems, Inc./Webex Meetings Server12 versions
    cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:*+ 11 more
    • cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:*range: <3.0
    • cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release1:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release4:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:*
    • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: n/a

Patches

Vulnerability mechanics

References

1

News mentions

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