CVE-2026-82826Network attack vector

Credential disclosure via cleartext network transmission

Published Oct 1, 2026 · Updated Oct 1, 2026

Cleartext transmission in Hitachi Coding Software Suite 3.3.0 and earlier allows remote attackers to read credentials and sensitive data in transit. The Hitachi CNA record does not identify which HCSS connection or service sends the data without encryption. Exposure requires access to the affected traffic path; the reported impact is disclosure, not direct data alteration or service interruption.

CVSS severity8.7
High
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Hitachi Coding Software Suite 3.3.0 and earlier allows remote attackers to read credentials and sensitive data in transit. The Hitachi CNA record does not identify which HCSS connection or service sends the data without encryption. Exposure requires access to the affected traffic path; the reported impact is disclosure, not direct data alteration or service interruption.

The record

CVE
CVE-2026-82826
Published
Oct 1, 2026
Updated
Oct 1, 2026
Vendor
Hitachi Industrial Equipment Systems Co., Ltd.
Product
Hitachi Coding Software Suite
Classifications
CWE-319, CAPEC-102, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.3.0 changes=[{"at":"4.0.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hitachi Industrial Equipment Systems Co., Ltd. · Hitachi Coding Software Suiteversion=0 <=3.3.0 changes=[{"at":"4.0.0","status":"unaffected"}]

Published CVSS scores

8.7HitachiCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5HitachiCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
CAPEC-102Session Sidejacking
T1040Network Sniffing

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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