CVE-2025-60686

Name: CVE-2025-60686
Creator: NVD / NIST
Published: 2025-11-13T16:15:52.59+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2025-60686 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. A local stack-based buffer overflow vulnerability exists in the infostat.cgi and cstecgi.cgi binaries of ToToLink routers (A720R V4.1.5cu.614_B20230630, LR1200GB V9.1.0u.6619_B20230130, and NR1800X V9.1.0u.6681_B20230703). Both programs parse the contents of /proc/net/arp using sscanf() with "%s" format specifiers into fixed-size stack buffers without length validation. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

A local stack-based buffer overflow vulnerability exists in the infostat.cgi and cstecgi.cgi binaries of ToToLink routers (A720R V4.1.5cu.614_B20230630, LR1200GB V9.1.0u.6619_B20230130, and NR1800X V9.1.0u.6681_B20230703). Both programs parse the contents of /proc/net/arp using sscanf() with "%s" format specifiers into fixed-size stack buffers without length validation. Specifically, one function writes user-controlled data into a single-byte buffer, and the other into adjacent small arrays without bounds checking. An attacker who controls the contents of /proc/net/arp can trigger memory corruption, leading to denial of service or potential arbitrary code execution.

Metrics

CVSS 3.1

5.1/10

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

EPSS Probability

0.20%

10.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-121

Affected Software

Vendor	Product	Versions
Totolink	A720r Firmware	4.1.5cu.614_b20230630
Totolink	Lr1200gb Firmware	9.1.0u.6619_b20230130
Totolink	Nr1800x Firmware	9.1.0u.6681_b20230703

References

http://totolink.comBroken Link
https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60686.mdExploit, Third Party Advisory
https://www.totolink.net/Product

Timeline

Published: Nov 13, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-60686?

How severe is CVE-2025-60686?

CVE-2025-60686 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2025-60686?

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-2025-60686?

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

Scan your code now

Source: NVD / NIST