CVE-2025-3994: A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525

Routine

LOW 2.4MITIGATE

CVE-2025-3994 is a low-severity flaw (CVSS 2.4) affecting n150rt firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525. It has been classified as problematic. Affected is an unknown function of the file /home.htm of the component IP Port Filtering. The manipulation of the argument Comment leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	2.4 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	5.0% (top 8%)
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2025-04-28
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: totolink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-28 01:15 UTCPublished CVE record published
2026-06-17 09:21 UTCUpdated Record last modified

totolink n150rt firmware MITIGATE

Affected: 3.4.0-b20190525

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.0-b20190525

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-3994?

n150rt firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-3994 being exploited?

CVE-2025-3994 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-3994 affect?

CVE-2025-3994 affects n150rt firmware. Severity is low (CVSS 2.4). A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525. It has been classified as problematic. Affected is an unknown function of the file /home.htm of the component IP Port Filtering. The manipulation of the argument Comment leads to

How urgent is CVE-2025-3994?

Priority 36/100. EPSS top 8%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2025-6299 MEDIUM 4.7 MITIGATE A vulnerability classified as critical has been found in TOTOLINK N150RT 3.4.0-B20190525
CVE-2025-4462 HIGH 8.8 MITIGATE A vulnerability, which was classified as critical, has been found in TOTOLINK N150RT 3.4.0-B20190525
CVE-2025-4461 LOW 2.4 MITIGATE A vulnerability classified as problematic was found in TOTOLINK N150RT 3.4.0-B20190525
CVE-2025-4460 LOW 2.4 MITIGATE A vulnerability classified as problematic has been found in TOTOLINK N150RT 3.4.0-B20190525
CVE-2025-3996 LOW 2.4 MITIGATE A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525

References

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