Critical severity · published Apr 14, 2026
CVE-2026-27303
Adobe Connect | Deserialization of Untrusted Data (CWE-502)
9.6
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Adobe Connect · Adobe
through 12.10 · source: vendor
AC
Adobe Connect Desktop Application · Adobe
through 2025.3 · source: vendor
CO
Connect · Adobe
before 12.11 · source: NVD
CD
Connect Desktop Application · Adobe
through 2025.3; before 2025.9.15 · source: NVD
Affected product
AC
Adobe Connect
Adobe
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