by Kastro
Paper/Archive/CVE-2026-27303

CVE-2026-27303

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, NVD agree)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 49.3.493 × 209.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Adobe Connect≤ 12.1012.11CNA
Adobe Connect Desktop Application≤ 2025.32025.9CNA

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
NVD9.6CVSS: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/apsb26-37.html