CVE-2025-8759Network attack vector

Unauthenticated data exposure via hard-coded download key

Published Aug 9, 2025 · Updated Aug 12, 2025

Hard-coded key use in Lighttpd on TRENDnet TN-200 1.02b02 allows remote attackers to read protected data via forged download tokens. The Lighttpd secdownload.secret setting stores the shared literal neV3rUseMe, so token validation cannot establish per-device authorization. No authentication or user interaction is required, although producing a valid token is high-complexity; the documented consequence is confidentiality loss only.

CVSS severity5.9
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded key use in Lighttpd on TRENDnet TN-200 1.02b02 allows remote attackers to read protected data via forged download tokens. The Lighttpd secdownload.secret setting stores the shared literal neV3rUseMe, so token validation cannot establish per-device authorization. No authentication or user interaction is required, although producing a valid token is high-complexity; the documented consequence is confidentiality loss only.

The record

CVE
CVE-2025-8759
Published
Aug 9, 2025
Updated
Aug 12, 2025
Vendor
TRENDnet
Product
TN-200
Classifications
CWE-321, T1550
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=1.02b02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TRENDnet · TN-200version=1.02b02

Published CVSS scores

2.6VulDBAV:N/AC:H/Au:N/C:P/I:N/A:N
3.7VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
2.9VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.9NVDCVSS:3.1/AV:N/AC:H/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.

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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-321Use of Hard-coded Cryptographic Key
T1550Use Alternate Authentication Material

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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