Loading vulnerability…
Deserialization of Untrusted Data RCE in Adobe Connect
CVE-2026-34615 is a deserialization of untrusted data vulnerability affecting Adobe Connect versions 2025.3, 12.10, and earlier. Improper handling of serialized input can allow attacker-controlled data to be deserialized in a way that leads to arbitrary code execution in the context of the current user. The available reporting also indicates a scope change, meaning successful exploitation can impact resources beyond the originally vulnerable component. Some reporting around exploitation prerequisites is inconsistent, but the vulnerability is described as remotely exploitable and capable of leading to script injection into web content and subsequent compromise of the victim account or session.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation can result in arbitrary code execution with the privileges of the current user. Depending on the user context and deployment, this may enable compromise of the victim session or account, execution of attacker-supplied code, unauthorized actions within the application context, and potential access to additional resources due to the changed scope. Reported impact emphasizes confidentiality and integrity compromise rather than service availability loss.
If you can’t patch tonight, do this now.
No specific vendor workaround is documented in the available information. Until patching is completed, reduce exposure by limiting access to Adobe Connect instances to trusted users and networks where feasible, minimizing opportunities for delivery of attacker-controlled content, and enforcing browser and application hardening measures that reduce the impact of malicious web content. Prioritize rapid patch deployment because the issue is described as remotely exploitable.
Patch, then assume compromise.
Upgrade Adobe Connect to a fixed release later than version 12.10. Apply the vendor security updates published for the affected product line on 2026-04-14. Ensure both server-side Adobe Connect components and any associated desktop application components are updated where applicable, and validate that vulnerable legacy versions such as 2025.3 and 12.10 and earlier are no longer in use.
No public exploits tracked yet. Mallory keeps watching.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.