CVE-2025-60686: Buffer Overflow
A local stack-based buffer overflow vulnerability exists in the infostat.cgi and cstecgi.cgi binaries of ToToLink routers (A720R V4.1.5cu.614B20230630, LR1200GB V9.1.0u.6619B20230130, and NR1800X V9.1.0u.6681B20230703). 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-60686?
CVE-2025-60686 is classified as a critical local stack-based buffer overflow vulnerability.
How do I fix CVE-2025-60686?
To mitigate CVE-2025-60686, users should upgrade their ToToLink router firmware to the latest version available from the manufacturer.
Which devices are affected by CVE-2025-60686?
CVE-2025-60686 affects ToToLink router models A720R, LR1200GB, and NR1800X running specific firmware versions.
What causes CVE-2025-60686?
CVE-2025-60686 is caused by improper handling of the sscanf() function in the infostat.cgi and cstecgi.cgi binaries.
Can CVE-2025-60686 be exploited remotely?
Yes, CVE-2025-60686 can potentially be exploited locally, allowing an attacker to execute arbitrary code.