How severe is CVE-2025-45865?

CVE-2025-45865 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-45865 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-45865?

CVE-2025-45865 affects Totolink A3002r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-45865?

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

Does CVE-2025-45865 have an EU (EUVD) identifier?

Yes. CVE-2025-45865 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14607.

When was CVE-2025-45865 published?

CVE-2025-45865 was published on 2025-05-13 and last updated on 2026-06-17.

CVE-2025-45865

CVE-2025-45865 is a critical-severity vulnerability in Totolink A3002r Firmware with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-14607
Weakness: CWE-120
Affected product: Totolink A3002r Firmware
Published: 2025-05-13
Last modified: 2026-06-17

Description

TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the dnsaddr parameter in the formDhcpv6s interface.

Frequently asked questions

What is CVE-2025-45865?: TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the dnsaddr parameter in the formDhcpv6s interface.
How severe is CVE-2025-45865?: CVE-2025-45865 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-45865 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-45865?: CVE-2025-45865 affects Totolink A3002r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-45865?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-45865 have an EU (EUVD) identifier?: Yes. CVE-2025-45865 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14607.
When was CVE-2025-45865 published?: CVE-2025-45865 was published on 2025-05-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:a3002r_firmware:4.0.0-b20230531.1404:*:*:*:*:*:*:*

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CVE-2025-55591 — Critical (CVSS 9.8): TOTOLINK-A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability in the devicemac…
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