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    CVE-2026-34659

    Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.

    Published:May 12, 2026
    Last Modified:May 13, 2026
    EPS:May 12, 2026
    EPSS Score:0.01503
    CVSS Score:9.6

    Affected Products

    Vendor
    Adobe
    Product
    Adobe Connect
    Vendor
    Adobe
    Product
    Connect Desktop Application

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

    CVE-2026-34660 (CVSS 9.3) — Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by an Incorrect Authorization vulnerabil…
    CVE-2026-27303 (CVSS 9.6) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerabi…
    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…

    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