CVE-2025-51630

Name: CVE-2025-51630
Creator: NVD / NIST
Published: 2025-07-17T14:15:32.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2025-51630 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.45%

36.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Totolink	N350rt Firmware	9.3.5u.6139_b20201216

References

https://github.com/luckysmallbird/Totolink-N350RT-Vulnerability/blob/main/1-ePort.mdExploit, Third Party Advisory
https://github.com/luckysmallbird/Totolink-N350RT-Vulnerability/blob/main/1-ePort.mdExploit, Third Party Advisory

Timeline

Published: Jul 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-51630?

TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.

How severe is CVE-2025-51630?

CVE-2025-51630 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2025-51630?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-51630?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST