CVE-2023-26359
Adobe ColdFusion Deserialization of Untrusted Data Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 11 September 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 16.99% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 21 August 2023 · due 11 September 2023
- Weakness
- CWE-502
- Affected
- adobe/coldfusion
- Source
- psirt@adobe.com
EPSS 17.0% since 4 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://helpx.adobe.com/security/products/coldfusion/apsb23-25.html; https://nvd.nist.gov/vuln/detail/CVE-2023-26359
References
- https://helpx.adobe.com/security/products/coldfusion/apsb23-25.htmlPatch, Vendor Advisory
- https://helpx.adobe.com/security/products/coldfusion/apsb23-25.htmlPatch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-26359Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.