Adobe ColdFusion Deserialization of Untrusted Data Vulnerability
Adobe — ColdFusion
Adobe ColdFusion versions 2018u16 (and earlier), 2021u6 (and earlier) and 2023.0.0.330468 (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.
9.8
100.0%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- Jul 12, 2023
- Modified
- Oct 21, 2025
- Added to KEV
- Jan 8, 2024
- Federal patch due
- Jan 29, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2023-29300, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2023-29300 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2023-29300?
Adobe ColdFusion versions 2018u16 (and earlier), 2021u6 (and earlier) and 2023.0.0.330468 (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.
How severe is CVE-2023-29300?
CVE-2023-29300 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2023-29300 actively exploited in the wild?
Yes. CVE-2023-29300 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jan 8, 2024, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.
What is the EPSS score for CVE-2023-29300?
100.0% - meaning FIRST.org's EPSS model estimates a 100.0% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2023-29300?
Yes - a public Nuclei template referencing CVE-2023-29300 exist in public repositories we checked.
What type of vulnerability is CVE-2023-29300?
CVE-2023-29300 is classified under CWE-502 (Deserialization of Untrusted Data (CWE-502)).
Cross-checked against
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