CVE-2025-5671: A vulnerability, which was classified as critical, was found in TOTOLINK N302R Plus up to 3.4.0-B20201028

Q: How do I fix CVE-2025-5671?

n302r plus firmware: upgrade to 3.4.0-b20201028. Exact commands for each OS are on this page.

Q: Is CVE-2025-5671 being exploited?

CVE-2025-5671 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-5671 affect?

CVE-2025-5671 affects n302r plus firmware. Severity is high (CVSS 8.8). A vulnerability, which was classified as critical, was found in TOTOLINK N302R Plus up to 3.4.0-B20201028. Affected is an unknown function of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the ar

This month

HIGH 8.8UPGRADE

CVE-2025-5671 is a high-severity flaw (CVSS 8.8) affecting n302r plus 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, was found in TOTOLINK N302R Plus up to 3.4.0-B20201028. Affected is an unknown function of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2025-06-05
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

2025-06-05 18:15 UTCPublished CVE record published
2026-06-17 09:48 UTCUpdated Record last modified

totolink n302r plus firmware UPGRADE

Affected: < 3.4.0-b20201028

Fixed in: 3.4.0-b20201028

Safe to downgrade to: no unaffected older release

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-2025-5671?

n302r plus firmware: upgrade to 3.4.0-b20201028. Exact commands for each OS are on this page.

Is CVE-2025-5671 being exploited?

CVE-2025-5671 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-2025-5671 affect?

CVE-2025-5671 affects n302r plus firmware. Severity is high (CVSS 8.8). A vulnerability, which was classified as critical, was found in TOTOLINK N302R Plus up to 3.4.0-B20201028. Affected is an unknown function of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the ar

How urgent is CVE-2025-5671?

Priority 45/100. High severity

Related CVEs

CVE-2025-5672 HIGH 8.8 UPGRADE A vulnerability has been found in TOTOLINK N302R Plus up to 3.4.0-B20201028 and classified as critical

References

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