Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessGain low-privileged AION account
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DeliveryPosition on adjacent network segment
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ExploitInject crafted input into unvalidated field
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ExecutionInduce victim to view rendered output
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ImpactExtract limited confidential data from scoped component
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding for downstream
|
| Exploitation Conditions | Exploitation requires the attacker to be positioned on an adjacent network segment (same LAN, VLAN, or subnet - not routable over the open internet). The attacker must possess a valid low-privileged authenticated account within HCL AION. A victim user must actively interact with or render the content containing the crafted input (UI:R). The specific input fields affected are not named in available public data - the HCL advisory (KB0133084) should be consulted for exact field or feature identification. Exploitation is limited by: adjacency-only network access (rules out internet-facing exploitation), requirement for prior authentication at low privilege, mandatory victim interaction, and a confidentiality-only impact with no integrity or availability consequence. |
| Impact | The overall risk is low. The CVSS 3.1 base score of 3.4 reflects a narrow exploitation envelope: AV:A constrains the attacker to the same network segment or VLAN as the target, AC:L indicates no special race condition or configuration complexity is required, PR:L means the attacker must already hold a valid low-privileged account, UI:R means a victim must take an action (e.g., view crafted content), and the sole impact is C:L with no integrity or availability consequence. The scope change (S:C) elevates severity slightly by indicating the confidentiality leakage reaches beyond the immediately vulnerable component. No EPSS data was provided, and the vulnerability is absent from CISA KEV, indicating no confirmed active exploitation. The combination of adjacent-only vector, required authentication, and mandatory user interaction makes opportunistic mass exploitation implausible. This is a real but low-priority finding most relevant to insider-threat or post-compromise scenarios within the same network segment. |
| Exploit ScenarioDerived | An authenticated attacker with a low-privileged account on the same network segment as HCL AION v2.1.0 crafts a malicious payload in one of the unvalidated input fields. When a victim user views or interacts with the affected output - for example, a rendered page or report containing the injected data - the payload executes in their session context, leaking limited confidential information such as session tokens or displayed data to the attacker. No public proof-of-concept code has been identified at time of analysis. |
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Alert meAnalysisAIv1 – Aug 13, 2026
Insufficient server-side input validation in HCL AION v2.1.0 allows a low-privileged, adjacent-network attacker to submit crafted input that bypasses validation controls, resulting in limited confidentiality disclosure via a scope change to a dependent component. Exploitation requires user interaction, constraining opportunistic use. No public exploit code exists and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
RemediationAI
Consult the HCL vendor advisory at https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133084 for patch or upgrade guidance; an exact fixed version number is not independently confirmed from available data, so the advisory should be treated as the authoritative source. As a compensating control pending patching, restrict network access to HCL AION instances to trusted VLANs or VPN segments to mitigate the AV:A constraint - this eliminates access by untrusted adjacent-network users. Additionally, enforce strict role-based access controls to limit the population of low-privileged accounts that can interact with the affected input fields. Disabling or rate-limiting the affected input functionality, if identifiable from the advisory, would further reduce exposure with minimal operational impact.
Affected VersionsENISA
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Technical ContextAI · show details
The root cause is classified as CWE-116 (Improper Encoding or Escaping of Output), indicating that the application accepts and processes input without adequate server-side sanitization or encoding before rendering or passing it downstream. This class of flaw can manifest as cross-site scripting (XSS) or injection into adjacent components, consistent with the CVSS scope change (S:C) that suggests the confidentiality impact escapes the vulnerable component into a secondary context such as a browser session or connected service. The CPE string (cpe:2.3:a:hcl_software:aion:*:*:*:*:*:*:*:*) covers HCL AION broadly, with EUVD data pinning the confirmed affected version to v2.1.0. HCL AION is an enterprise AI and workflow automation platform.
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Severity by source
AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
Adjacent-only access, low-privilege authentication, and mandatory user interaction match description; scope change and confidentiality-only impact reflect CWE-116 output-encoding flaw reaching a secondary context.
Primary rating from Vendor (HCL).
CVSS VectorVendor: HCL
DescriptionCVE.org
HCL AION is affected by a vulnerability where certain input fields do not enforce sufficient server-side input validation. Unexpected or crafted input may be accepted by the application, potentially resulting in unintended behavior or security impact under certain conditions.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
HCL AION 2.0's Content Security Policy does not enforce Trusted Types for scripts, leaving a browser-level defense-in-de
HCL AION 2.0.0 can leak credentials, system identifiers, and internal file paths through cached HTTPS responses because
HCL AION 2.0 allows unauthenticated remote attackers to access sensitive information due to a CWE-200 information disclo
Information disclosure in HCL AION 2.0 allows unauthenticated, remote attackers to read sensitive data without user inte
Session cookies issued by HCL AION 2.0 are set without the Secure attribute (CWE-614), so a network-positioned attacker
Content security policy bypass in HCL AION v2.0 enables inline script injection, allowing remote attackers to modify web
Script allowlist bypass in HCL AION 2.0 allows unauthorized script execution through a misconfigured Content-Security-Po
HCL AION contains inadequate auditing and logging mechanisms that fail to properly track certain user actions, reducing
Insufficient anti-automation controls on certain HCL AION v2.1.0 endpoints allow scripted or automated requests to bypas
HCL AION contains a container base image authentication vulnerability where container images are not properly verified b
Aion versions up to 2.0 is affected by incorrect permission assignment for critical resource (CVSS 5.5).
HCL AION lacks adequate brute-force protections on authentication mechanisms, allowing repeated login attempts that coul
EUVD-2025-210725
GHSA-crvg-56hm-8qcq
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB