CVE-2025-3989: A vulnerability classified as critical was found in TOTOLINK N150RT 3.4.0-B20190525

This month

HIGH 8.8MITIGATE

CVE-2025-3989 is a high-severity flaw (CVSS 8.8) affecting n150rt firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as critical was found in TOTOLINK N150RT 3.4.0-B20190525. Affected by this vulnerability is an unknown functionality of the file /boafrm/formStaticDHCP. The manipulation of the argument Hostname leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2025-04-27
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

2025-04-27 23:15 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-2025-3989?

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

Is CVE-2025-3989 being exploited?

CVE-2025-3989 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-2025-3989 affect?

CVE-2025-3989 affects n150rt firmware. Severity is high (CVSS 8.8). A vulnerability classified as critical was found in TOTOLINK N150RT 3.4.0-B20190525. Affected by this vulnerability is an unknown functionality of the file /boafrm/formStaticDHCP. The manipulation of the argument Hostname leads to buffer ov

How urgent is CVE-2025-3989?

Priority 52/100. High severity; 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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