CVE-2026-34659

Adobe Connect | Deserialization of Untrusted Data (CWE-502)

State: Published
Severity: 9.6 Critical
Published: May 12, 2026
Updated: Aug 27, 2026
Reserved: Mar 30, 2026

Description

Adobe Connect versions 2025.9.15, 2025.8.157 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. An attacker could exploit this vulnerability to execute arbitrary code. 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.

Scores

CVSS	Score	Vector	Source
3.1	9.6 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H	adobe

Weaknesses

CWE-502 Deserialization of Untrusted Data (CWE-502)

Affected Products

Product	Versions
Adobe ConnectAdobe	12.11 and earlierAffected 12.11.1Not affected
Adobe Connect Desktop ApplicationAdobe	2025.9.15 (Win), 2025.8.157 (Mac) and earlierAffected 2026.3.125 (Win), 2026.01.39 (Mac)Not affected

References

https://helpx.adobe.com/security/products/connect/apsb26-50.htmlvendor-advisory

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