CVE-2026-34659

Critical

Description

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.

SeverityCritical

CVSS9.6

Exploit probability—

Product

Adobe Connect Desktop Application

PublishedMay 12, 2026

First seenMay 12, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Vendor advisories

helpx.adobe.com/security/products/connect/apsb26-50.html

Affected products

Product	Affected versions	Fixed in
adobe connect_desktop_application	v ≤ 2025.8.157, 2025.9.15	—

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