Deserialization Vulnerability in Adobe Connect Software
CVE-2026-27303

9.6CRITICAL

Key Information:

Vendor

Adobe
Status
Adobe Connect
Vendor
CVE Published:
14 April 2026

What is CVE-2026-27303?

Adobe Connect, specifically versions 2025.3 and 12.10 and earlier, is exposed to a deserialization vulnerability that could allow arbitrary code execution in the context of the user's session. This security flaw does not necessitate any user interaction for exploitation, highlighting the urgency for users to update their software to mitigate potential risks.

Affected Version(s)

Adobe Connect 0 <= 12.10

References

https://helpx.adobe.com/security/products/connect/apsb26-...
vendor-advisory

CVSS V3.1

Score:
9.6
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.