CVE-2026-27303: Adobe Connect

Critical severity, CVSS 9.6. EPSS: 1.9% chance of exploitation in the next 30 days.

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.

Affected products

• Adobe Connect: before 12.11 (fixed in 12.11)
• Adobe Connect Desktop Application: up to and including 2025.3; before 2025.9.15 (fixed in 2025.9.15)

Published 2026-04-14. Last modified 2026-08-28.