CVE-2026-56455Network attack vector

Unauthenticated service crash via unchecked input length

Published Jul 16, 2026 · Updated Jul 16, 2026

Stack-based buffer overflow in HCL Software DFX Analytics 3.0 and earlier allows remote attackers to crash or make the service unresponsive. An unnamed component accepts excessive attacker-controlled input without enforcing length bounds before copying it into a stack buffer. No authentication or user interaction is required, and the documented impact is limited to service availability rather than data access or modification.

CVSS severity5.3
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in HCL Software DFX Analytics 3.0 and earlier allows remote attackers to crash or make the service unresponsive. An unnamed component accepts excessive attacker-controlled input without enforcing length bounds before copying it into a stack buffer. No authentication or user interaction is required, and the documented impact is limited to service availability rather than data access or modification.

The record

CVE
CVE-2026-56455
Published
Jul 16, 2026
Updated
Jul 16, 2026
Vendor
HCL Software
Product
DFX Analytics
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 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=version 3.0 and below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HCL Software · DFX Analyticsversion=version 3.0 and below

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3HCL SoftwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

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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-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

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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