What is CVE-2025-27203?

CVE-2025-27203 is a critical-severity vulnerability in Adobe Connect, classified under Deserialization of Untrusted Data. CVSS score: 9.6/10. Published 2025-07-08.

How severe is CVE-2025-27203?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Deserialization in Adobe Connect

CVE-2025-27203

Adobe Connect versions 24.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could lead to arbitrary code execution by an attacker. Exploitation of this issue does require user interaction and scope is cha…

Vulnerability class: Insecure Deserialization

EPSS: 0.235 (96.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Adobe Connect — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

helpx.adobe.com/security/products/connect/apsb25-61.html (vendor-advisory)

Frequently asked questions

What is CVE-2025-27203?: CVE-2025-27203 is a critical-severity vulnerability in Adobe Connect, classified under Deserialization of Untrusted Data. CVSS score: 9.6/10. Published 2025-07-08.
How severe is CVE-2025-27203?: Critical severity. CVSS v3 base score is 9.6 out of 10.