CVE-2026-106624

Executive Summary

CVE-2026-106624 is a critical code injection vulnerability (CWE-94) in Adobe ColdFusion that permits unauthenticated, network-reachable attackers to execute arbitrary code in the context of the current user. It carries a CVSS v3.1 base score of 10.0 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) — the maximum possible severity — with a changed scope, meaning exploitation can affect resources beyond the vulnerable component's security authority. No public proof-of-concept, Nuclei template, or exploit code is available, EPSS has not been scored, and no patch has been identified from any tracked source, leaving all deployed instances potentially exposed.

Technical Analysis

The vulnerability is classified as CWE-94: Improper Control of Generation of Code ("Code Injection"). In the ColdFusion context, this class of flaw arises when attacker-supplied input is incorporated into code that the application later compiles or evaluates without adequate neutralization. Rather than a memory-safety defect, the root cause is a trust boundary failure: untrusted data is treated as executable logic.

The NVD description explicitly states that successful exploitation "could result in arbitrary code execution in the context of the current user" and that "exploitation of this issue does not require user interaction." The CVSS vector confirms the pre-conditions: the attack is remotely deliverable (AV:N), requires no special conditions or elevated privileges to attempt (AC:L), needs no authentication (PR:N), and no victim interaction (UI:N).

The most consequential sub-metric is Scope:Changed (S:C). In CVSS terms, this means the exploited component's privilege boundary is crossed — code executing in the ColdFusion application's context may act on resources that a separate security authority governs. Practically, an application-layer injection in the ColdFusion server process can reach the host operating system, filesystem, or other services hosted on the same system. The High ratings on Confidentiality, Integrity, and Availability (C:H/I:H/A:H) indicate total loss of protection across all three dimensions if the flaw is successfully triggered.

Because the CNA title is empty and the affected version range is not enumerated, the specific vulnerable code path — whether a tag, function, template handler, or administrative interface — cannot be confirmed from the available data. No file paths, parameter names, or endpoint values are asserted here because none are provided in the source. What can be stated authoritatively is the vulnerability class and its exploitation envelope: unauthenticated remote code injection resulting in arbitrary code execution.

Exploitation Scenarios

No public PoC, exploit code, or Nuclei template exists for CVE-2026-106624. The attack chain below is inferred strictly from the vulnerability class (CWE-94) and the supplied CVSS/NVD data; it does not assume specific endpoints, parameters, or function names.

1. Reconnaissance / target identification. An attacker enumerates internet-exposed ColdFusion servers. ColdFusion deployments are frequently identifiable through distinctive administrative interface paths, server response headers, error page fingerprints, and cookie characteristics. Shodan-style queries using the product name and administrative page markers surface candidate hosts. Because PR:N and AV:N hold, no credentials are needed to proceed to exploitation.

2. Triggering the flaw. The attacker submits crafted input to a ColdFusion surface that generates or evaluates code from user-controllable data. In the CWE-94 class, the input is interpreted as code rather than as inert data. No authentication step and no victim interaction are required. The exact injection point is not specified in the available data and is therefore not asserted.

3. Payload / execution (class level). The injected content causes the ColdFusion process to generate and execute code. Because the result is "arbitrary code execution in the context of the current user," the payload executes with the privileges of the ColdFusion service account — typically the web/server process identity hosting the application. This is the standard outcome for CWE-94 code injection: the boundary between data and executable logic collapses, and the attacker's payload runs as first-class code.

4. Post-exploitation impact. Given Scope:Changed plus C:H/I:H/A:H, a successful attacker can read and exfiltrate sensitive data, modify or destroy application and system state, and disrupt availability. With scope change, the blast radius can extend beyond the ColdFusion application itself to the underlying host and adjacent services running under or accessible to that account, including configuration files, credentials, and downstream data stores.

Impact Assessment

The CVSS v3.1 base score is 10.0 — the maximum — reflecting a worst-case combination of remote reachability, no authentication requirement, no user interaction, and full loss of confidentiality, integrity, and availability. The Scope:Changed rating is the critical multiplier: exploitation is not contained to the vulnerable component's own security context, so impact can propagate to the host operating system and other resources mediated by a different security authority than the ColdFusion application.

Business impact for organizations running exposed ColdFusion instances includes: full compromise of the web application and any data it processes; potential lateral movement from the server process to the host and connected internal systems; data breach exposure for regulated data (PII, PHI, financial records) handled by the application; and service outages from destructive or resource-exhausting payloads. Because the flaw is unauthenticated, any internet- or network-reachable instance is a candidate target without requiring stolen credentials or phishing.

Blast radius is bounded only by network exposure and the privileges of the ColdFusion service account. Hardened deployments running the service under least-privilege accounts and segmented from sensitive internal networks reduce — but do not eliminate — downstream impact.

Detection Guidance

Sigma Rule

title: Potential ColdFusion Code Injection Exploitation (CVE-2026-106624)
id: 3f8a1c62-9b47-4d21-8e5a-7c1d2f4b6a90
status: experimental
description: Detects anomalous process creation or request patterns consistent with unauthenticated code injection against Adobe ColdFusion leading to arbitrary code execution.
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-106624
author: valtersit.com Threat Intelligence
date: 2026/01/01
logsource:
  category: webserver
  product: coldfusion
detection:
  selection_methods:
    - 'POST'
    - 'GET'
  selection_suspicious:
    - 'cfexecute'
    - 'Runtime.getRuntime'
    - 'ProcessBuilder'
    - 'java.lang.Process'
    - '<cfexecute'
  condition: selection_methods and selection_suspicious
falsepositives:
  - Legitimate administrative templates using cfexecute
  - Application deployments performing server-side process invocation
level: critical
tags:
  - attack.t1190
  - cve.2026.106624
  - cwe.94

YARA Rule

rule CVE_2026_106624_ColdFusion_CodeInjection
{
    meta:
        description = "Detects ColdFusion code-injection artifacts associated with CVE-2026-106624"
        author = "valtersit.com Threat Intelligence"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-106624"
        date = "2026-01-01"
        severity = "critical"

    strings:
        $cfx1 = "cfexecute" nocase
        $cfx2 = "Runtime.getRuntime" nocase
        $cfx3 = "ProcessBuilder" nocase
        $cfx4 = "java.lang.Process" nocase
        $cfx5 = "#CreateObject(" nocase
        $cfx6 = "evaluate(" nocase

    condition:
        any 2 of ($cfx*) and filesize < 2MB
}

Suricata IDS Rule

alert http any any -> any any (msg:"CVE-2026-106624 ColdFusion Code Injection Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"cfide"; nocase; http.request_body; content:"cfexecute"; nocase; sid:2026106624; rev:1; reference:cve,2026-106624; reference:url,nvd.nist.gov/vuln/detail/CVE-2026-106624; classtype:web-application-attack; priority:1;)

Elastic Detection

sequence by host.name with maxspan=60s
  [network where event.action == "network_flow" and destination.port in (80, 443)]
  [process where process.parent.name : ("java", "coldfusion") and process.name : ("cmd.exe", "bash", "sh", "powershell.exe", "wscript.exe", "cscript.exe")]

Splunk SPL Query

index=web OR index=coldfusion
| search (uri_path="*cfide*" OR uri_path="*CFIDE*") AND (form_data="*cfexecute*" OR form_data="*Runtime.getRuntime*" OR form_data="*ProcessBuilder*" OR form_data="*java.lang.Process*")
| stats count min(_time) as first_seen max(_time) as last_seen by src_ip, dest_host, uri_path, http_user_agent
| where count > 1
| sort - count

Wazuh OSSEC Rule

<group name="coldfusion,web,cve-2026-106624,">
  <rule id="1066241" level="12">
    <if_sid>31100,31101,31103,31104,31106</if_sid>
    <match>cfexecute|Runtime\.getRuntime|ProcessBuilder|java\.lang\.Process</match>
    <description>CVE-2026-106624: Potential ColdFusion code injection exploitation attempt</description>
    <mitre>
      <id>T1190</id>
    </mitre>
    <group>attack,cve_2026_106624,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 — UNPATCHED. No patch evidence exists from any tracked source. Vendor fix, affected version range, and official workarounds are all unknown. Until a vendor advisory is published, defensive actions are necessarily risk-reduction measures rather than guaranteed fixes.

1. Immediate mitigations.

   • Remove ColdFusion administrative and application endpoints from direct internet exposure. Place them behind a VPN, zero-trust access proxy, or an authenticated reverse proxy.
   • If internet exposure is unavoidable, apply strict WAF rules targeting code-injection payloads (e.g., process-invocation tokens such as cfexecute/Runtime/ProcessBuilder), understanding that WAF control for an unauthenticated RCE is evasive and non-authoritative.
   • Run the ColdFusion service under a least-privilege, dedicated OS account with no interactive login, restricted filesystem write paths, and no access to sensitive internal network segments.
   • Segment the ColdFusion host from the internal network; egress- and lateral-movement controls limit post-exploitation reach given Scope:Changed.
   • Enable detailed audit logging on the ColdFusion server and host, and monitor with the detection rules above.

2. Patch / upgrade steps.

   • Monitor Adobe's official ColdFusion security bulletin and Security Advisories page for the CVE-2026-106624 fix. Do not assume a specific patch version — none is identified in the available data.
   • Establish a subscription to Adobe product security notifications so the patch is applied within your emergency-change window the moment it is released.
   • Until a fix exists, treat every reachable ColdFusion instance as potentially compromised-capable and prioritize network isolation.

3. Long-term hardening.

   • Maintain a current inventory of ColdFusion versions and hosts; the absence of an enumerated affected range means scope must be determined from the vendor advisory once available.
   • Adopt application allow-listing / egress filtering on ColdFusion servers.
   • Require authentication and IP allow-listing for all administrative surfaces.
   • Integrate the Sigma, YARA, Suricata, Elastic, Splunk, and Wazuh detections above into standing SOC content, and rehearse response for an unauthenticated RCE of maximum severity.
   • Track EPSS and CISA KEV status; exploitation of a 10.0-scored unauth RCE frequently follows public disclosure, and KEV listing would elevate remediation priority regardless of patch availability.

References

• NVD — CVE-2026-106624: https://nvd.nist.gov/vuln/detail/CVE-2026-106624
• CWE-94 — Improper Control of Generation of Code ('Code Injection'): https://cwe.mitre.org/data/definitions/94.html
• MITRE ATT&CK — T1190 Exploit Public-Facing Application: https://attack.mitre.org/techniques/T1190/
• CISA Known Exploited Vulnerabilities Catalog (verify current KEV status): https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• Adobe ColdFusion Security Advisories (monitor for vendor advisory): https://helpx.adobe.com/security/products/coldfusion.html
• FIRST EPSS (score not yet published for this CVE): https://www.first.org/epss/

No known threat actor campaigns or confirmed exploit-in-the-wild evidence are associated with CVE-2026-106624 in the supplied data. No public PoC, exploit code, or Nuclei template is available.