CVE-2018-4939
Adobe ColdFusion Deserialization of Untrusted Data Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 3 Nov 2021
Description
Adobe ColdFusion Update 5 and earlier versions, ColdFusion 11 Update 13 and earlier versions have an exploitable Deserialization of Untrusted Data vulnerability. Successful exploitation could lead to arbitrary code execution.
Key facts
- Published
- 19 May 2018
- Last changed
- 21 Oct 2025
- Assigned by
- adobe
- KEV added
- 3 Nov 2021
- KEV fix due
- 3 May 2022
- EPSS
- 61.78% likely to be exploited in the next 30 days, higher than 99.188% 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 CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.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 |
|---|---|---|
| n/a | Adobe ColdFusion ColdFusion Update 5 and earlier versions, ColdFusion 11 Update 13 and earlier versions |
|
Timeline
- 19 May 2018 Published
- 3 Nov 2021 CVE-2018-4939 added to CISA KEV
- 3 Nov 2021 Added to the CISA KEV catalogue