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…

PriorityP429medium5.1CVSS 3.1

AVLACLPRNUINSUCLINAL

EPSS

0.22%

11.9th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
totolink	a720r_firmware	—	—

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