CVE-2026-17518: asus router Stack-based Buffer Overflow

Vulnerability summary

CVE-2026-17518 is a high (CVSS 8.2) Stack-based Buffer Overflow vulnerability in asus router.

Timeline

1. 20-10-2026
   PublishedVulnerability first disclosed.

Description

Buffer Copy without Checking Size of Input in certain ASUS router models allows an adjacent authenticated user to corrupt device operations and cause a denial of service via an HTTP request with input exceeding the expected length. Refer to the ' Security Update for ASUS Router Firmware' section on the ASUS Security Advisory for more information.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).