CVE-2021-27246

HighCVSS 8.0/10Last modified Jun 17, 2026

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer A7 AC1750 1.0.15 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of MAC addresses by the tdpServer endpoint. A crafted TCP message can write stack pointers to the stack. An attacker can leverage this vulnerability to execute code in the context of the root user. Was ZDI-CAN-12306.

Metrics

CVSS 3.1 8.0/10CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-121

Affected software

No affected versions have been published.

Timeline

Published
Apr 14, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-27246: High severity, CVSS 8.0 | Vulnix