by Kastro
Paper/Archive/CVE-2026-34659

CVE-2026-34659

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

EPSS 0.6%CVSS 9.6
critical.is priorityof 100
39
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 50.4.504 × 2010.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Adobe Connect≤ 12.1112.11.1CNA
Adobe Connect Desktop Application≤ 2025.9.15 (Win), 2025.8.157 (Mac)2026.3.125 (Win), 2026.01.39 (Mac)CNA

Scores by source

adobe (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisoryhelpx.adobe.com/security/products/connect/apsb26-50.html