What is CVE-2025-45865?

CVE-2025-45865 is a critical-severity vulnerability in Totolink A3002r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-05-13.

How severe is CVE-2025-45865?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Totolink A3002r

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.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (40.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Totolink A3002r
Totolink A3002r_firmware — versions 4.0.0-b20230531.1404
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Product)
cve@mitre.org (Exploit)

Frequently asked questions

What is CVE-2025-45865?: CVE-2025-45865 is a critical-severity vulnerability in Totolink A3002r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-05-13.
How severe is CVE-2025-45865?: Critical severity. CVSS v3 base score is 9.8 out of 10.