SEPTEMBER 15, 2026
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Case File

CVE-2026-82539

CRITICAL · CVSS 9.1 EPSS 0.60% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-30 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

A critical vulnerability exists in the MAC Filtering function of TOTOLINK A720R firmware version 4.1.5cu.630_B20250509, allowing remote attackers to manipulate the 'desc' argument, potentially leading to memory corruption. Organizations using this router should prioritize immediate patching or mitigation efforts, as the exploit has been publicly disclosed and is likely to be actively targeted.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-82539
Severity
CRITICAL
CVSS
9.1
EPSS
0.60%

Original NVD Description

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.