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Vulnerability record · CVE-2025-27203 · published 8 July 2025

CVE-2025-27203: Adobe connect desktop application deserialization of untrusted data vulnerability

Adobe · Connect Desktop Application

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 changed.

9.6 CVSS 3.1 Critical EPSS 0.98% · top 39.2% CWE-502 · Deserialization of untrusted data
9.6CVSS 3.1 base score
0.98%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

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 changed.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://helpx.adobe.com/security/products/connect/apsb25-61.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.6CVE-2026-34659Adobe connect desktop application deserialization of untrusted data vulnerabilityAdobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbit…EPSS 1.9%9.6CVE-2026-27303Adobe connect deserialization of untrusted data vulnerabilityAdobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary cod…EPSS 1.9%9.3CVE-2026-34660Adobe connect desktop application incorrect authorization vulnerabilityAdobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by an Incorrect Authorization vulnerability that could result in arbitrary code…EPSS 1.0%9.3CVE-2026-34615Adobe connect deserialization of untrusted data vulnerabilityAdobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary cod…EPSS 1.8%9.3CVE-2026-27246Adobe connect cross-site scripting vulnerabilityAdobe Connect versions 2025.3, 12.10 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this…EPSS 0.74%9.3CVE-2026-27243Adobe connect cross-site scripting vulnerabilityAdobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this…EPSS 0.74%9.3CVE-2026-27245Adobe connect cross-site scripting vulnerabilityAdobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this…EPSS 0.74%8.7CVE-2026-34617Adobe connect cross-site scripting vulnerabilityAdobe Connect versions 2025.3, 12.10 and earlier are affected by a Cross-Site Scripting (XSS) vulnerability that could result in privilege escalation…EPSS 0.70%

Source: NIST National Vulnerability Database (record CVE-2025-27203), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.