How severe is CVE-2025-3989?

CVE-2025-3989 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-2025-3989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3989?

CVE-2025-3989 affects Totolink N150rt Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3989?

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-2025-3989 have an EU (EUVD) identifier?

Yes. CVE-2025-3989 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12425.

When was CVE-2025-3989 published?

CVE-2025-3989 was published on 2025-04-27 and last updated on 2026-06-17.

CVE-2025-3989

CVE-2025-3989 is a high-severity vulnerability in Totolink N150rt 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12425
Weakness: CWE-120
Affected product: Totolink N150rt Firmware
Published: 2025-04-27
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-3989?: 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.
How severe is CVE-2025-3989?: CVE-2025-3989 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-2025-3989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3989?: CVE-2025-3989 affects Totolink N150rt Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3989?: 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-2025-3989 have an EU (EUVD) identifier?: Yes. CVE-2025-3989 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12425.
When was CVE-2025-3989 published?: CVE-2025-3989 was published on 2025-04-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:n150rt_firmware:3.4.0-b20190525:*:*:*:*:*:*:*

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