What is CVE-2025-45841?

CVE-2025-45841 is a critical-severity vulnerability in Totolink Nr1800x, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-05-08.

How severe is CVE-2025-45841?

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

Buffer overflow in Totolink Nr1800x

CVE-2025-45841

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the text parameter in the setSmsCfg function.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (36.3th 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 Nr1800x
Totolink Nr1800x_firmware — versions 9.1.0u.6681_b20230703
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write
CWE-121 — Stack-based Buffer Overflow

References

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

Frequently asked questions

What is CVE-2025-45841?: CVE-2025-45841 is a critical-severity vulnerability in Totolink Nr1800x, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-05-08.
How severe is CVE-2025-45841?: Critical severity. CVSS v3 base score is 9.8 out of 10.