CVE-2026-27303 CRITICAL

CVE-2026-27303: Adobe Connect | Deserialization of Untrusted Data (CWE-502)

Vendor Adobe
Product Adobe Connect
Weakness CWE-502 · Unsafe deserialization
Published April 14, 2026
Last update April 28, 2026

CVSS base score

9.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 14, 2026 CVE published
April 28, 2026 Record updated