CVE-2025-60692 is a stack-based buffer overflow vulnerability in the libshared.so library of Cisco Linksys E1200 v2 routers. The functions get_mac_from_ip and get_ip_from_mac use sscanf with "%100s" format specifiers to parse entries from /proc/net/arp into fixed-size buffers of 50 bytes. Because the format specifier allows reading up to 100 characters into a 50-byte buffer, a local attacker who can control the contents of /proc/net/arp can overflow these buffers, causing memory corruption. This may result in denial of service or potentially arbitrary code execution on the affected device.

Successful exploitation allows a local attacker to cause memory corruption via a stack-based buffer overflow, potentially leading to denial of service or arbitrary code execution on the affected router. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H).

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time. Until a patch is available, restrict local access to the device and monitor for suspicious activity related to /proc/net/arp manipulation.