What is CVE-2025-45866?

CVE-2025-45866 is a medium-severity vulnerability in Totolink A3002r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.4/10. Published 2025-05-13.

How severe is CVE-2025-45866?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Buffer overflow in Totolink A3002r

CVE-2025-45866

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

Vulnerability class: Buffer Overflow

EPSS: 0.003 (22.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

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, Third Party Advisory)

Frequently asked questions

What is CVE-2025-45866?: CVE-2025-45866 is a medium-severity vulnerability in Totolink A3002r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.4/10. Published 2025-05-13.
How severe is CVE-2025-45866?: Medium severity. CVSS v3 base score is 5.4 out of 10.