CVE-2025-60685
A stack buffer overflow exists in the ToToLink A720R Router firmware V4.1.5cu.614_B20230630 within the sysconf binary (sub_401EE0 function). The binary reads the /proc/stat file using fgets() into a local buffer and subsequently parses the line using sscanf() into a single-byte variable with the %s format specifier. Maliciously crafted /proc/stat content can overwrite adjacent stack memory, potentially allowing an attacker with filesystem write privileges to execute arbitrary code on the device.
- Score
- CVSS 3.1 5.1 Medium
- Status
- Modified - cve@mitre.org
- Published
- 2025-11-13
- Last modified
- 2026-07-05
- Weaknesses
- CWE-121
Affected products
References
- https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60685.md
- https://www.totolink.net/
