What is CVE-2025-22903?

CVE-2025-22903 is a medium-severity vulnerability in Totolink N600r, classified under Stack-based Buffer Overflow. CVSS score: 4.6/10. Published 2025-04-15.

How severe is CVE-2025-22903?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Buffer overflow in Totolink N600r

CVE-2025-22903

TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the pin parameter in the function setWiFiWpsConfig.

Vulnerability class: Buffer Overflow

Published 2025-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (10.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Totolink N600r
Totolink N600r Firmware — versions 4.3.0cu.7647_b20210106

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

github.com/xyqer1/TOTLINK-N600R-setWiFiWpsConfig-StackOverflow (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-22903?: CVE-2025-22903 is a medium-severity vulnerability in Totolink N600r, classified under Stack-based Buffer Overflow. CVSS score: 4.6/10. Published 2025-04-15.
How severe is CVE-2025-22903?: Medium severity. CVSS v3 base score is 4.6 out of 10.