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Cisco Webex Security Advisories & Vulnerabilities

Recent Cisco PSIRT advisories affecting Webex meetings, calling, and devices. Search, check severity and CVSS, and get a remediation or refresh quote from an authorized Cisco partner.

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10 recent advisories affecting Cisco Webex

  • Cisco Webex Services Certificate Validation Vulnerability

    Critical · CVSS 9.8
    CVE-2026-20184Published Apr 15, 2026cisco-sa-webex-cui-cert-8jSZYhWL

    Affected: Cisco Webex Meetings

  • Cisco Webex App Client-Side Remote Code Execution Vulnerability

    High · CVSS 8.8
    CVE-2025-20236Published Apr 16, 2025cisco-sa-webex-app-client-rce-ufyMMYLC

    Affected: Cisco Webex App

  • Cisco Webex Player Memory Corruption Vulnerability

    High · CVSS 7.8
    CVE-2021-1526Published Jun 2, 2021cisco-sa-webex-player-kOf8zVT

    Affected: Cisco Webex Meetings , Cisco Webex Network Recording Player

  • Cisco Webex Network Recording Player and Webex Player Memory Corruption Vulnerability

    High · CVSS 7.8
    CVE-2021-1502Published Jun 2, 2021cisco-sa-webex-player-dOJ2jOJ

    Affected: Cisco Webex Meetings , Cisco Webex Network Recording Player

  • Cisco Webex Network Recording Player and Webex Player Memory Corruption Vulnerability

    High · CVSS 7.8
    CVE-2021-1503Published Jun 2, 2021cisco-sa-webex-player-rCFDeVj2

    Affected: Cisco Webex Meetings , Cisco Webex Network Recording Player

  • Cisco Webex App Open Redirect Vulnerability

    Medium · CVSS 4.3
    CVE-2026-20178Published Jun 17, 2026cisco-sa-webex-app-redirect-KOyxhffH

    Affected: Cisco Webex App

  • Cisco Webex Meetings Cross-Site Scripting Vulnerability

    Medium · CVSS 6.1
    CVE-2026-20233Published Jun 3, 2026cisco-sa-webex-xss-jw3NeQzS

    Affected: Cisco Webex Meetings

  • Cisco Slido Insecure Direct Object Reference Vulnerability

    Medium · CVSS 5.4
    CVE-2026-20219Published May 6, 2026cisco-sa-slido-idor-CpsFmKxN

    Affected: Cisco Webex Meetings , Cisco Slido

  • Cisco Webex Contact Center Cross-Site Scripting Vulnerability

    Medium · CVSS 6.1
    CVE-2026-20170Published Apr 15, 2026cisco-sa-webexcc-xss-WEX5nUnA

    Affected: Cisco Webex Contact Center

  • Cisco Webex Services Cross-Site Scripting Vulnerability

    Medium · CVSS 6.1
    CVE-2026-20149Published Mar 4, 2026cisco-sa-webex-xss-TZFTbbwN

    Affected: Cisco Webex Meetings

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Frequently asked questions

What are the latest Cisco Webex security advisories?

This page lists recent Cisco security advisories affecting Cisco Webex, from the Cisco PSIRT openVuln feed, with severity, CVSS, and CVEs. Confirm the affected software versions against what you run.

How do I fix a Cisco Webex vulnerability?

Most Cisco vulnerabilities are fixed by upgrading to a patched software release or applying the documented mitigation. If the platform is end-of-life, the remedy is a refresh. Uniqcli, an authorized Cisco partner, scopes the patch or replacement and can quote it TAA-compliant and GPC-payable.

Is Cisco Webex still supported?

Security fixes are only available while a product is supported. Check our Cisco end-of-life lookup to confirm the Last Date of Support, then patch (if supported) or plan a refresh with Uniqcli.

Data from the Cisco PSIRT openVuln API, shown for reference; Cisco’s official advisories are authoritative. Cisco and PSIRT are trademarks of Cisco Systems, Inc.; Uniqcli LLC is an independent authorized Cisco partner.