CVE-2023-26359 CRITICAL

CVE-2023-26359: Adobe ColdFusion Deserialization of Untrusted Data Arbitrary code execution

Vendor Adobe
Product ColdFusion
Weakness CWE-502 · Unsafe deserialization
KEV Status Known Exploited
Published March 23, 2023
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (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 does not require user interaction.

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

March 23, 2023 CVE published
October 21, 2025 Record updated