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HCL AION CVE-2025-62315

| EUVDEUVD-2025-210725 LOW
Improper Encoding or Escaping of Output (CWE-116)
2026-08-13 HCL GHSA-crvg-56hm-8qcq
3.4
CVSS 3.1 · Vendor: HCL
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Attack ChainAIDerived

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

  1. Access
    Gain low-privileged AION account
  2. Delivery
    Position on adjacent network segment
  3. Exploit
    Inject crafted input into unvalidated field
  4. Execution
    Induce victim to view rendered output
  5. Impact
    Extract 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.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – 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

AION v2.1.0

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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

Vendor (HCL) PRIMARY 3.4 LOW
AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
vuln.today AI 3.4 LOW

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.

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

Primary rating from Vendor (HCL).

CVSS VectorVendor: HCL

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

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

EPSS Score
0.1%
Top 96% exploitable
Prevalence
Low
niche enterprise AI and workflow automation platform
Data Quality
5 sources
Confidence: Medium

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 LOW
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
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· derived
Defer
Exploitation
None
System Exposure· derived
Controlled
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

17
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +17
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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