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CVE-2025-27203

Adobe Connect Desktop Application insecure deserialization

9.6 CRITICALEPSS 1.09%
  1. Published8 Jul 2025

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Adobe Connect Desktop Application< 2025.5.5

Remediation

Fixed in
Adobe Connect Desktop Application≥ 2025.5.5

References

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Frequently asked

Is CVE-2025-27203 being actively exploited?

CVE-2025-27203 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.09%.

How severe is CVE-2025-27203?

CVE-2025-27203 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 1.09% probability of exploitation.

Which products are affected by CVE-2025-27203?

Affected products include Adobe Connect Desktop Application.

How do I fix CVE-2025-27203?

Upgrade affected software to a fixed version, for example Adobe Connect Desktop Application 2025.5.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-27203 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.