CVE-2026-27303

Critical

Description

Adobe Connect versions 2025.3, 12.10 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. 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

PublishedApr 14, 2026

First seenApr 14, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Update

adobe connect12.11 or later
adobe connect_desktop_application2025.9.15 or later

Vendor advisories

helpx.adobe.com/security/products/connect/apsb26-37.html

Affected products

Product	Affected versions	Fixed in
adobe connect	v < 12.11	12.11
adobe connect_desktop_application	v ≤ 2025.3, v < 2025.9.15	2025.9.15

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