CVE-2025-26318Public exploitNetwork attack vector

Domain account disclosure via unauthenticated session listing

Published Mar 4, 2025 · Updated Aug 26, 2025

Information disclosure in hb.exe in TSplus Remote Access before 17.30 allows remote attackers to retrieve connected domain account names. The unauthenticated /cgi-bin/hb.exe endpoint returns the existing web-session listing, and its response exposes usernames rather than only load data. Network reachability to the built-in web server is sufficient; disclosure is limited to accounts with active sessions and does not expose credentials.

CVSS severity5.8
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in hb.exe in TSplus Remote Access before 17.30 allows remote attackers to retrieve connected domain account names. The unauthenticated /cgi-bin/hb.exe endpoint returns the existing web-session listing, and its response exposes usernames rather than only load data. Network reachability to the built-in web server is sufficient; disclosure is limited to accounts with active sessions and does not expose credentials.

The record

CVE
CVE-2025-26318
Published
Mar 4, 2025
Updated
Aug 26, 2025
Vendor
TSplus
Product
TSplus Remote Access
Classifications
CWE-201, T1087.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2025Record 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=0 <17.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TSplus · TSplus Remote Accessversion=0 <17.30

Published CVSS scores

5.8MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-201Insertion of Sensitive Information Into Sent Data
T1087.002Domain Account

Public exploit references

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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