How severe is CVE-2025-5671?

CVE-2025-5671 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-5671 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-5671?

CVE-2025-5671 affects Totolink N302r Plus Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-5671?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-5671 have an EU (EUVD) identifier?

Yes. CVE-2025-5671 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17013.

When was CVE-2025-5671 published?

CVE-2025-5671 was published on 2025-06-05 and last updated on 2026-06-17.

CVE-2025-5671

CVE-2025-5671 is a high-severity vulnerability in Totolink N302r Plus Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-17013
Weakness: CWE-119
Affected product: Totolink N302r Plus Firmware
Published: 2025-06-05
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-5671?: 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.
How severe is CVE-2025-5671?: CVE-2025-5671 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-5671 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5671?: CVE-2025-5671 affects Totolink N302r Plus Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-5671?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-5671 have an EU (EUVD) identifier?: Yes. CVE-2025-5671 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17013.
When was CVE-2025-5671 published?: CVE-2025-5671 was published on 2025-06-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:n302r_plus_firmware:*:*:*:*:*:*:*:*

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