CVE Feed

    Dashboard / CVE / CVE-2026-20149

    CVE-2026-20149

    A vulnerability in Cisco Webex could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability, and no customer action is needed. This vulnerability was due to improper filtering of user-supplied input. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link. A successful exploit could have allowed the attacker to conduct an XSS attack against the targeted user.

    Published:Mar 4, 2026
    Last Modified:Apr 17, 2026
    EPS:Mar 4, 2026
    EPSS Score:0.00047
    CVSS Score:6.1

    Affected Products

    Vendor
    Cisco
    Product
    Webex
    Vendor
    Cisco
    Product
    Webex Meetings

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-20045 (CVSS 8.2) — A vulnerability in Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Ses…
    CVE-2025-20215 (CVSS 5.4) — A vulnerability in the meeting-join functionality of Cisco Webex Meetings could have allowed an unauthenticate…
    CVE-2017-3823 (CVSS 8.8) — An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Pl…
    CVE-2013-3425 (CVSS 4) — The Meeting Center component in Cisco WebEx 11 generates different error messages for invalid file-access atte…
    CVE-2012-6399 (CVSS 5.8) — Cisco WebEx 4.1 on iOS does not verify that the server hostname matches a domain name in the subject's Common …
    CVE-2009-2880 (CVSS 9.3) — Buffer overflow in atrpui.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.x before 27.1…
    CVE-2009-2875 (CVSS 9.3) — Buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.x before 27.1…
    CVE-2009-2879 (CVSS 9.3) — Heap-based buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 (aka T26SP49EP32) …
    CVE-2009-2877 (CVSS 9.3) — Stack-based buffer overflow in ataudio.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 for Windows, 27.…
    CVE-2009-2878 (CVSS 9.3) — Heap-based buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 (aka T26SP49EP32) …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High