CVE-2025-10183Public exploitNetwork attack vector

Unauthenticated file exfiltration via encoded external entities

Published Sep 9, 2025 · Updated Sep 9, 2025

XXE injection in TecAlliance TecConnect 4.1 allows remote attackers to exfiltrate server files through its OpenMessaging webservice. ProcessRequest accepts an HTML-encoded DOCTYPE inside RequestElement, then resolves attacker-supplied external entities and sends resolved file contents outbound. No authentication or user action is required; the disclosed proof reads Windows files and can expose the service account's NTLM hash.

CVSS severity9.1
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE injection in TecAlliance TecConnect 4.1 allows remote attackers to exfiltrate server files through its OpenMessaging webservice. ProcessRequest accepts an HTML-encoded DOCTYPE inside RequestElement, then resolves attacker-supplied external entities and sends resolved file contents outbound. No authentication or user action is required; the disclosed proof reads Windows files and can expose the service account's NTLM hash.

The record

CVE
CVE-2025-10183
Published
Sep 9, 2025
Updated
Sep 9, 2025
Vendor
TecAlliance
Product
TecConnect
Classifications
CWE-611, T1005, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TecAlliance · TecConnectversion=4.1

Published CVSS scores

9.1Black Lantern SecurityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1005Data from Local System
T1190Exploit Public-Facing Application

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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