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    CVE-2021-40721

    Adobe Connect version 11.2.3 (and earlier) is affected by a reflected Cross-Site Scripting (XSS) vulnerability. If an attacker is able to convince a victim to visit a URL referencing a vulnerable page, malicious JavaScript content may be executed within the context of the victim's browser.

    Published:Oct 15, 2021
    Last Modified:Apr 23, 2025
    EPS:Oct 15, 2021
    EPSS Score:0.01466
    CVSS Score:6.1

    Affected Products

    Vendor
    Adobe
    Product
    Connect

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-34617 (CVSS 8.7) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Cross-Site Scripting (XSS) vulnerability th…
    CVE-2026-21331 (CVSS 6.1) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…
    CVE-2026-27246 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulner…
    CVE-2026-34614 (CVSS 6.1) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…
    CVE-2026-27245 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…
    CVE-2026-34615 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerabi…
    CVE-2026-27243 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…
    CVE-2025-49552 (CVSS 8.1) — Adobe Connect versions 12.9 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability t…
    CVE-2025-49553 (CVSS 9.3) — Adobe Connect versions 12.9 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability t…

    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