CVE-2023-29300
Adobe ColdFusion Deserialization of Untrusted Data Arbitrary code execution
- Critical 9.8
- Exploited: added to CISA KEV 8 Jan 2024
- Used in ransomware campaigns
Description
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.
Key facts
- Published
- 12 Jul 2023
- Last changed
- 21 Oct 2025
- Assigned by
- adobe
- KEV added
- 8 Jan 2024
- KEV fix due
- 29 Jan 2024
- Used in ransomware
- Yes, according to CISA
- EPSS
- 99.991% likely to be exploited in the next 30 days, higher than 99.985% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom the CNA (adobe)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Adobe | ColdFusion |
|
Timeline
- 12 Jul 2023 Published
- 8 Jan 2024 CVE-2023-29300 added to CISA KEV
- 8 Jan 2024 Added to the CISA KEV catalogue