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Adobe ColdFusion EUVDEUVD-2026-100516

| CVE-2026-105903 CRITICAL
Code Injection (CWE-94)
2026-10-13 psirt@adobe.com GHSA-p5x2-3mcq-2693
9.9
CVSS 3.1 · Vendor: adobe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate with low-privilege access to ColdFusion
  2. Delivery
    Send crafted code-injection request
  3. Exploit
    Server evaluates injected code
  4. Execution
    Execute arbitrary code as current user
  5. Impact
    Pivot across changed scope boundary

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Code injection prevention, sandbox exec
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires network access to an Adobe ColdFusion instance (2023 up to 2023.0.25, or 2025 up to 2025.0.13) and a low-privileged authenticated foothold on the application (PR:L), after which a crafted request triggers code injection with no user interaction (UI:N) and no stated non-default configuration requirement. The primary limiting factor is the need for some authenticated/low-privilege access rather than fully anonymous reach; versions at or below the patched releases addressed in Adobe APSB26-144 are affected, and updating to the fixed version removes exposure. The scope change (S:C) means successful exploitation can affect resources beyond the vulnerable component's security authority.

Impact

This is a genuine high-priority vulnerability, not a high-CVSS/low-real-risk artifact. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C) describes a network-reachable, low-complexity code-injection flaw (CWE-94) requiring only low privileges and no user interaction, with a changed scope and full H/H/H impact, which drives the 9.9 base score - consistent with arbitrary code execution. The signals mostly align: remote vector, trivial complexity, and only a low-privilege foothold needed make this attractive for weaponization, and Adobe ColdFusion has a long history of post-patch mass exploitation. However, several key signals are MISSING from the provided data: no EPSS probability is supplied, there is no CISA KEV listing in the input, and no POC indicator is present. Per precision rules this is therefore 'no public exploit identified at time of analysis.' The one potential tension is PR:L: the description calls the attacker 'low-privileged,' confirming some authentication/foothold is required, which modestly lowers real-world risk versus a fully unauthenticated RCE - but given how often ColdFusion credentials or low-priv access are obtainable, the mitigating effect is limited. Overall: patch urgently; absence of EPSS/KEV data reflects missing inputs, not confirmed low risk.

Exploit ScenarioDerived

A low-privileged attacker with access to a ColdFusion application endpoint sends a crafted request that injects attacker-controlled code (CWE-94), which the server evaluates, yielding arbitrary code execution in the context of the current user and, due to the changed scope, impact beyond the initially vulnerable component. No user interaction is required, so exploitation can be fully attacker-driven against a reachable instance. No public proof-of-concept was identified in the provided data at time of analysis.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 13, 2026

Arbitrary code execution in Adobe ColdFusion 2023 up to 2023.0.25 and ColdFusion 2025 up to 2025.0.13 allows a low-privileged authenticated remote attacker to inject and execute code in the context of the current user without user interaction, with a CVSS score of 9.9 and scope change. The vulnerable component is reachable over the network, but the attacker must already have a low-privileged foothold (PR:L) rather than fully anonymous access. No public exploit identified at time of analysis; patch available per vendor advisory APSB26-144.

RemediationAI

Apply the update documented in Adobe APSB26-144 for ColdFusion 2023 and 2025; patched releases in that advisory remove exposure. Because exact fixed version numbers are not provided in the input, verify the advisory's fixed version for your branch before deployment. If immediate patching is not possible, reduce exposure by restricting network access to ColdFusion application and administrative endpoints to trusted networks or VPN, removing or tightly auditing low-privileged accounts that can reach the affected functionality, and monitoring for unexpected CFML or Java code generation or execution. Trade-offs: network restrictions can break legitimate remote or partner access, and aggressive account reduction may disrupt application workflows. Patch available per vendor advisory.

Affected VersionsENISA

ColdFusion 2023 0 ≤2023.0.25
ColdFusion 2025 0 ≤2025.0.13

Affected Packages

euvd coldfusion_2023 no fix
euvd coldfusion_2025 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The issue is an improper control of generation of code vulnerability (CWE-94) in Adobe ColdFusion, involving unsafe construction or generation of executable code that can be influenced by attacker-supplied input. The assessed CVSS vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H: network reachability, low attack complexity, low-privileged authenticated access, no user interaction, scope change, and high confidentiality, integrity, and availability impact. The scope change indicates that successful exploitation can affect resources beyond the vulnerable component's security authority. Affected branches are ColdFusion 2023 through 2023.0.25 and ColdFusion 2025 through 2025.0.13 according to EUVD; no CPE strings were included in the supplied data, and the vendor reference is Adobe APSB26-144.

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Severity by source

Vendor (adobe) PRIMARY 9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vuln.today AI 9.9 CRITICAL

Remote code injection needing only a low-privilege foothold (PR:L) and no interaction (UI:N) with full system compromise and scope change justifies C/I/A:H and S:C.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

ColdFusion is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability that could result in arbitrary code execution in the context of the current user. A low-privileged attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue does not require user interaction. Scope is changed.

Executive ViewAI

Why It Matters

Adobe ColdFusion 2023 (through 2023.0.25) and ColdFusion 2025 (through 2025.0.13) contain a critical arbitrary code execution flaw (CVSS 9.9, scope change) that any user already holding a low-privileged account on the server can abuse to run code as that user, without needing to trick a victim into interacting. Because ColdFusion frequently sits on internet-facing infrastructure that bridges web and internal systems, a single compromised low-privilege credential - from a phished developer, a shared service account, or a partner integration - could escalate into full server compromise and lateral movement into adjacent systems. Leadership should treat this as a patch-or-isolate decision: no public exploit has been identified at the time of analysis, which gives a short window to act before exploitation techniques become widely available.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis (confirm status against Adobe advisory APSB26-144). Interim mitigations: restrict network access to ColdFusion administrative and application endpoints, enforce least privilege and rotate credentials for low-privileged ColdFusion accounts, disable unused components such as RDS and scheduled tasks, deploy WAF or virtual patching rules, segment affected hosts from sensitive systems, and enable audit logging to detect abuse of existing low-privileged accounts.

Threat Intelligence Overview

EPSS Score
0.5%
Top 58% exploitable
Prevalence
High
widely deployed enterprise Adobe application server, frequent attack target
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

51
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +50
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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ColdFusion versions 2023.12, 2021.18, 2025.0 and earlier are affected by a Deserialization of Untrusted Data vulnerabili

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