CVE-2026-27303: Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability…
CVE-2026-27303 · Severity: critical · CVSS 9.6 · Published 2026-04-14
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-27303 being exploited in the wild.
How severe is CVE-2026-27303?
Critical severity, with a CVSS score of 9.6, published 14 April 2026.
Which products and versions are affected?
Adobe Connect, Adobe Connect Desktop Application, Apple macOS, Microsoft Windows. The advisory does not name versions.
Is there a fix for CVE-2026-27303?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-27303?
Check whether you run Adobe Connect, Adobe Connect Desktop Application, Apple macOS or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.