CVE-2025-3994Network attack vector

Stored XSS via unescaped IP filter comment

Published Apr 28, 2025 · Updated Apr 28, 2025

Stored XSS in TOTOLINK N150RT 3.4.0-B20190525 allows remote authenticated users to inject script through an IP filter comment. The /home.htm IP Port Filtering handler places the Comment value in web output without neutralizing executable markup. Administrative access is required, and the injected code runs only when a user loads the affected output, limiting the demonstrated impact to browser-side content modification.

CVSS severity4.8
Medium
EPSS probability4.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in TOTOLINK N150RT 3.4.0-B20190525 allows remote authenticated users to inject script through an IP filter comment. The /home.htm IP Port Filtering handler places the Comment value in web output without neutralizing executable markup. Administrative access is required, and the injected code runs only when a user loads the affected output, limiting the demonstrated impact to browser-side content modification.

The record

CVE
CVE-2025-3994
Published
Apr 28, 2025
Updated
Apr 28, 2025
Vendor
TOTOLINK
Product
N150RT
Classifications
CWE-94, CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=3.4.0-B20190525

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TOTOLINK · N150RTversion=3.4.0-B20190525

Published CVSS scores

2.4VulDB CNACVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
2.4VulDB CNACVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
3.3VulDB CNAAV:N/AC:L/Au:M/C:N/I:P/A:N
3.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:N
4.8VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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.

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

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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