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CVE-2023-26359: Adobe ColdFusion Deserialization of Untrusted Data Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2023-08-21
• EPSS: 17.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-23 · updated 2026-06-17
• Weakness: CWE-502

Description

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.

Affected products

• Adobe ColdFusion: 2018, 2018-update1, 2018-update10, 2018-update11, 2018-update12, 2018-update13 (+16)

References

• https://helpx.adobe.com/security/products/coldfusion/apsb23-25.html
• https://helpx.adobe.com/security/products/coldfusion/apsb23-25.html
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-26359

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