CVE-2023-38203
Adobe ColdFusion Deserialization of Untrusted Data Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 29 January 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Adobe ColdFusion versions 2018u17 (and earlier), 2021u7 (and earlier) and 2023u1 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. 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
- 97.07% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 8 January 2024 · due 29 January 2024 · used in ransomware campaigns
- Weakness
- CWE-502
- Affected
- adobe/coldfusion
- Source
- psirt@adobe.com
EPSS 97.1% since 30 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/apsb23-41.html ; https://nvd.nist.gov/vuln/detail/CVE-2023-38203
References
- https://helpx.adobe.com/security/products/coldfusion/apsb23-41.htmlPatch, Vendor Advisory
- https://helpx.adobe.com/security/products/coldfusion/apsb23-41.htmlPatch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-38203Third 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.