CVE-2020-10887: (Pwn2Own) TP-Link Archer A7 Protection Mechanism Failure Firewall Bypass Vulnerability

Published Mar 25, 2020

Updated

This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root.

Other sources

This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9663.

Affected Software

3 affected components

TP-Link Archer A7

TP-Link Ac1750 Firmware=190726

TP-Link AC1750

Event History

Mar 25, 2020

CVE Published

via MITRE·07:15 PM

Data Sourced

via MITRE·07:15 PM

DescriptionSeverityWeakness

Feb 23, 2026

Advisory Published

via ZDI·06:25 PM

Data Sourced

via ZDI·06:25 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What is CVE-2020-10887?

CVE-2020-10887 is a vulnerability that allows a firewall bypass on TP-Link Archer A7 routers.

How severe is CVE-2020-10887?

CVE-2020-10887 has a severity rating of critical (9.8).

What is the impact of CVE-2020-10887?

CVE-2020-10887 allows attackers to bypass the firewall on affected routers.

Is authentication required to exploit CVE-2020-10887?

No, authentication is not required to exploit CVE-2020-10887.

How can I fix CVE-2020-10887?

To fix CVE-2020-10887, update your TP-Link Archer A7 firmware to the latest version.