CVE-2026-82539

A vulnerability was determined in TOTOLINK A720R 4.1.5cu.630_B20250509. This impacts the function setMacFilterRules of the file cstecgi.cgi of the component MAC Filtering. Executing a manipulation of the argument desc can lead to memory corruption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

  • Published Aug 30, 2026
  • CVSS 8.5 high
  • 0.8% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-82539 at the National Vulnerability Database