CVE-2026-48276Network attack vector

Unauthenticated code execution via dangerous file upload

Published Jun 30, 2026 · Updated Aug 27, 2026

Unrestricted file upload in Adobe ColdFusion 2025.9 and earlier and 2023.20 and earlier allows remote attackers to execute arbitrary code. Adobe identifies dangerous file-type acceptance but has not disclosed the affected upload handler or the validation failure that permits executable content. No authentication or user interaction is required, and successful exploitation runs code in the context of the ColdFusion process user.

CVSS severity10.0
Critical
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Adobe ColdFusion 2025.9 and earlier and 2023.20 and earlier allows remote attackers to execute arbitrary code. Adobe identifies dangerous file-type acceptance but has not disclosed the affected upload handler or the validation failure that permits executable content. No authentication or user interaction is required, and successful exploitation runs code in the context of the ColdFusion process user.

The record

CVE
CVE-2026-48276
Published
Jun 30, 2026
Updated
Aug 27, 2026
Vendor
Adobe
Product
Adobe ColdFusion
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=20
  2. Affected versionversion=0 <=9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe ColdFusionversion=0 <=20; version=0 <=9

Published CVSS scores

10.0AdobeCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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