PT-2026-83541 · Totolink · A720R

·

CVE-2026-82539

·

Published

2026-08-30

·

Updated

2026-08-31

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions TOTOLINK A720R version 4.1.5cu.630 B20250509
Description Memory corruption can occur in the MAC Filtering component when the setMacFilterRules function within the 'cstecgi.cgi' endpoint is processed. A remote attacker can trigger this issue by manipulating the desc argument.
Recommendations Update TOTOLINK A720R version 4.1.5cu.630 B20250509 to a newer version. Restrict administrative access to the device.

Exploit

Fix

Buffer Overflow

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

BDU:2026-13152
CVE-2026-82539

Affected Products

A720R