CVE-2025-4462: A vulnerability, which was classified as critical, has been found in TOTOLINK N150RT 3.4.0-B20190525

This month

HIGH 8.8MITIGATE

CVE-2025-4462 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, which was classified as critical, has been found in TOTOLINK N150RT 3.4.0-B20190525. This issue affects some unknown processing of the file /boafrm/formWsc. The manipulation of the argument localPin leads to buffer overflow. The attack may be initiated 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	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2025-05-09
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

2025-05-09 05:15 UTCPublished CVE record published
2026-06-17 09:33 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-2025-4462?

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

Is CVE-2025-4462 being exploited?

CVE-2025-4462 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-2025-4462 affect?

CVE-2025-4462 affects n150rt firmware. Severity is high (CVSS 8.8). A vulnerability, which was classified as critical, has been found in TOTOLINK N150RT 3.4.0-B20190525. This issue affects some unknown processing of the file /boafrm/formWsc. The manipulation of the argument localPin leads to buffer overflow

How urgent is CVE-2025-4462?

Priority 56/100. 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-2025-4461 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
CVE-2025-3995 LOW 2.4 MITIGATE A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525

References

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