CVE-2026-34659

CRITICAL

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 9.6
EPSS 0.0374
EPSS Percentile 88.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-502
Status published
Products (3)
Adobe/Adobe Connect < 2025.8.157
adobe/connect_desktop_application 2025.9.15
adobe/connect_desktop_application < 2025.8.157
Published May 12, 2026
Tracked Since May 13, 2026